Blown Head Gasket Repair Procedure

#driveyourlife

 

blown head gasketSo you’ve had the misfortune of getting a blown head gasket on your car or truck.  Once you have properly diagnosed the problem, either through a trusted mechanic, seeing signs of a blown head gasket your next step is to decide how to fix your blown head gasket.

Options for fixing a blown head gasket:

  1. Take it to a mechanic
  2. Do it yourself
  3. Use BlueDevil Pour-N-Go Head Gasket Sealer

Take it to a Mechanic

This is your best option for getting your head gasket repaired the right way the first time without doing any more damage to your engine.  An experienced mechanic will know enough about your vehicle to know the procedure for disassembling your engine, how to check other components for damage, and how to get everything back together so your engine can run smoothly again.

Do it yourself

Many vehicle repairs can be done with a set of hand tools and limited knowledge about your vehicle, especially with so many how-to videos available on the internet.  Repairing a head gasket isn’t a job that fits into this category.  Here, we will outline the basic steps to replace a blown head gasket, but we only suggest attempting this job if you’ve got the right tools and the knowledge and experience to get the job done.

Blown Head Gasket Repair Procedure:

  1. Raise and support the car securely.  You will need to get underneath the car a few times to do things like drain coolant, remove exhaust components and possibly remove a few accessories.
  2. The first part of the job will include removing everything from the cylinder heads.  This will include disconnecting and possibly removing the battery, draining the coolant, removing the engine belt and accessories, and removing the intake and exhaust manifolds.  During this step, make sure to label all hoses and electrical connectors and put bolts and nuts for components in individually labeled baggies.  It can also be a good idea to keep a notebook of hints to help you put things back together.
  3. Once you’ve got things stripped down to just the engine, it’s time to remove the valve covers and timing cover so you can remove the timing chain or timing belt.  Make sure you fully understand the cam timing procedure to make sure you don’t damage the pistons or the valves during the process.  This is the most difficult part of the process so be careful and take your time!
  4. Remove the cylinder head by removing all the head bolts and carefully lifting the head off of the engine block being careful not to damage either surface.  Once you’ve got the head off it’s a good idea to send it off to a machine shop to be inspected to make sure it is ready to be reinstalled.  Similarly, check the block for flatness, cracks or other problems that would cause things to leak again.
  5. Now it’s time to put everything back together!  It’s important to understand the head bolt torquing procedure and to find out if the head bolts are torque to yield bolts that need to be replaced, or if you can reuse your old bolts.  One the heads are properly installed, you simply reverse your disassembly procedure being careful that the cam and crank timing is set correctly and all new gaskets are used.

BlueDevil Pour-N-Go Head Gasket Sealer

If the cost of a mechanic doesn’t make sense for your car and that procedure sounds scary, you do have another option!  BlueDevil Pour-N-Go Head Gasket Sealer can seal the leak in your head gasket quickly and easily without any disassembly of your engine.  Try reading through our directions to see how easy BlueDevil Pour-N-Go is to use!BlueDevil Pour-N-Go Head Gasket Sealer

 

 

 

 

 

Pick up BlueDevil Pour-N-Go Head Gasket Sealer today at your favorite local auto parts store like:

  • AutoZone
  • Advance Auto Parts
  • Bennett Auto Supply
  • CarQuest Auto Parts
  • NAPA Auto Parts
  • O’Reilly Auto Parts
  • Pep Boys
  • Fast Track
  • Bumper to Bumper Auto Parts Specialists
  • S&E Quick Lube Distributor
  • DYK Automotive
  • Fisher Auto Parts stores
  • Auto Plus Auto Parts stores
  • Hovis Auto & Truck Supply stores
  • Salvo Auto Parts
  • Advantage Auto Stores
  • Genuine Auto Parts stores
  • Bond Auto Parts stores
  • Tidewater Fleet Supply
  • Bumper to Bumper Auto Parts
  • Any Part Auto Parts
  • Consumer Auto Parts

Pictures Provided By:

blown_head_gasket.jpg – By Szena – Licensed by Getty Images – Original Link

530 responses to "Blown Head Gasket Repair Procedure"

530 Comments

  1. Harry Elder on May 6, 2014 at 4:38 pm

    I have bought a can of the head gasket repair. I have a 1997 Lincoln Mark 8 without an access to the radiator other then the overflow container. Do I pour the bottle for one minute in the overflow tank, that is low right now with fluid? Do I remove a radiator hose? do I fill up the overflow tank first? Please let me know how to apply your product, thank you, Harry at harrycelder@msn.com

    • BlueDevil Pro on May 12, 2014 at 3:51 pm

      If your vehicle has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold, you may add the product through the top radiator hose. Once it has been added reconnect the hose and start the idle from that point.

      Feel free to contact us with any further questions.

      • rolando on January 2, 2015 at 1:10 am

        I think I did it wrong will that be an issue i did it thru the reservior/overflow do I need to do it again ?

        • BlueDevil Pro on January 2, 2015 at 12:30 pm

          Rolando-

          You may still be alright. However, if you are still getting the same symptoms, instead of pouring it through the reservoir/overflow with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.

          Feel free to contact us with any further questions.

          Thanks,

          BDP

          • john on January 13, 2015 at 8:16 pm

            when i use blue devil head gasket sealr on my car how long until i add up coolant agin or does it need to be flush after using the product or can you mix the blue devil and coolant togheter



          • BlueDevil Pro on January 14, 2015 at 10:17 am

            John-

            After the BlueDevil process is complete (after the idle) you should allow the engine to cool down for at least 2 hours. Once it has cooled you may drain the system down to add your antifreeze.

            -BDP



          • Joe Marshall on August 21, 2015 at 3:13 pm

            I have a 1998 Cadillac deville , I have the overheating issue when I’ve been driving for long distances. Went to my trusted Mechanic and was diagnosed with a blown head gasket. My only question is I don’t have a radiator cap to pour it in to. Do pour it in my coolant tank?



          • BlueDevil Pro on August 25, 2015 at 4:14 pm

            Joe-

            If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.

            Thank You!

            -BDP



          • kya on December 6, 2016 at 5:07 am

            I did the same it runs better but it’s still has the white smoke and losing a little collant now but no longer running hot do u think I need another treatment



          • BlueDevil Pro on December 6, 2016 at 9:01 am

            Kya-

            When did you do your application of the product? Remember, the exhaust system may produce smoke for several hours before it can clear itself out. Feel free to contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

            Thank you!

            -BDP



          • Chris on May 1, 2017 at 8:36 am

            I this k I did the overflow too should I do it again or wait for a few days??



          • BlueDevil Pro on May 1, 2017 at 8:56 am

            Chris-

            The BlueDevil Head Gasket Sealer should not be added through the reservoir/overflow tank. Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

            Thank you!

            -BDP



          • Belinda on October 20, 2020 at 12:27 pm

            Hello, my engine overheats after ten minutes 🙁 how can I use this product? I really need to fix my overheating issue



          • BlueDevil Pro on October 20, 2020 at 2:43 pm

            Belinda-

            Unfortunately, if the vehicle is overheating after only ten minutes of running, the leak you have or the symptoms you’re having are a little too extreme for what BlueDevil would be able to repair. Replacing the head gasket may be your best option.

            Thank you!

            -BDP



        • Marquita Oluteyo on September 8, 2017 at 11:37 pm

          If my car doesnt start at all may I still use this product?

          • BlueDevil Pro on September 11, 2017 at 9:29 am

            Marquita-

            In order to get the benefit of using the BlueDevil Head Gasket Sealer, the vehicle would need to be able to idle for a full 50 minutes. If the vehicle is unable to start, unfortunately, it would not be a good candidate for the product. A hard part repair may be your best option.

            Thank you!

            -BDP



          • John on August 15, 2021 at 12:33 am

            I have a chevy implala and the oil and water mixed so I drained all the oil out and all the radiator fluid and changed the spark plugs .I’m wanting to fix this problem. Can I bleed the cooling system after I put the head gasket treatment in with antifreeze as the car starts warming up to get the air of the system ?



          • BlueDevil Pro on August 16, 2021 at 8:25 am

            John-

            Thank you for asking about your Chevy Impala. To confirm, are you getting water into the engine oil or is oil getting into the radiator and mixing in with the coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

            Thank you!

            -BDP



        • Rico on December 12, 2017 at 4:47 am

          Do i need to mix it with water or antifreeze before pouring

          • BlueDevil Pro on December 12, 2017 at 10:36 am

            Rico-

            You may add BlueDevil with either fresh antifreeze or water.

            Thank you!

            -BDP



          • BlueDevil Pro on December 12, 2017 at 10:36 am

            Rico-

            With the BlueDevil Head Gasket Sealer (https://store.gobdp.com/head-gasket-sealer-38386/), you would be flushing the cooling system and running the product with only water in the system. With the BlueDevil Pour-N-Go Head Gasket Sealer (https://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/), you may run that with your existing antifreeze, 50/50 mix or just plain water. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



          • Charles fonkou on July 30, 2019 at 11:40 pm

            Thank you for your support my dodge avenger 2012 has an over heating issue ,I brought it to the mechanic he told me that it’s the faulty head gasket .
            After the diagnostic done ,he said it could cost me couples thousands dollars to fix it; firstable I’m so pisse up!still having 2 years payment in that dawn car ,like it was my first car being to excited and didn’t take a time choose the one could sweeted my need.
            I’m so sorry for the long comments I’m just so disappointed buying 10 thousand dollars car and after a year you’ve to spend another $2500 for fixed it.
            I poured a blue devil ,and did a mistake to opened the radiator cap after 30min should I pour again also the leack has reduced considerably



          • BlueDevil Pro on July 31, 2019 at 9:45 am

            Charles-

            Thank you for asking about your Dodge Avenger. The reason why you wouldn’t want to open the radiator cap during the 50 minute idle is the product is attracted to air flow. Opening the cap would potentially create another area where the product might think is a leak and react accordingly. If you noticed improvement after your first application, a second application may be worth while. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

            Thank you!

            -BDP



        • Debbie on November 21, 2018 at 7:06 pm

          Followed blue devil head gasket sealant directions and now engine light is on. What caused that?

          • BlueDevil Pro on November 26, 2018 at 8:38 am

            Debbie-

            What are the symptoms your vehicle was having? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

            Thank you!

            -BDP



      • will on July 7, 2015 at 11:21 pm

        My Reservoir cat keeps popping off during the idle part

        • BlueDevil Pro on July 8, 2015 at 9:44 am

          Will-

          It is possible that you may be getting combustion/exhaust gases blowing into the cooling system and creating pressure which may be causing the reservoir to “pop off”. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with a low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will sometimes notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

          Thank You!

          -BDP

          • Sean Luke on November 1, 2016 at 7:37 pm

            So if your are positive which cylinder has the leak you should remove that spark plug during the pouring and idle process? I have a 2004 Civic and I am 100% sure it is cylinder #2 after compression checks on all 4 cylinders I just want to be sure before I do it.



          • BlueDevil Pro on November 2, 2016 at 9:19 am

            Sean-

            If you are getting combustion/exhaust gasses into the cooling system, we recommend removing the spark plug from the affected cylinder. You would remove the spark plug before starting the BlueDevil process, while the engine is cold. Based on your description, you would want to remove the spark plug from the #2 cylinder to relieve some of the pressure from building up, thus allowing the product to circulate and seal properly.

            Thank you!

            -BDP



          • Brian Hayes on September 24, 2017 at 8:19 am

            What about the fuel pumping into that cylinder for 50 min. Is There a risk of fire?



          • BlueDevil Pro on September 25, 2017 at 9:55 am

            Brian-

            Were you referring to the recommendation of removing the spark plug from the affected cylinder, in the situation of using the BlueDevil Head Gasket Sealer when combustion/exhaust gases are present? If so, you may also disconnect the fuel injector from the affected cylinder. This would accomplish the same goal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



        • noah on April 30, 2016 at 3:26 am

          If my heat don’t work will blue devil still work

          • BlueDevil Pro on May 2, 2016 at 9:48 am

            Noah-

            The reason for putting your heat on with the blower to the max, during the BlueDevil Head Gasket Procedure, is to draw heat from the engine to help it from overheating during the 50 minute idle. As long as the vehicle isn’t going to overheat in that 50 minutes, the product would still be able to seal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Sky on August 18, 2015 at 12:47 pm

        I have a 2000 Nissan Xterra and I think the head gasket may be blown. If I add Blue Devil, all I do is just pour it in the radiator or top radiator hose then let it run for 50 min? Do i empty the radiator first?

        • BlueDevil Pro on August 18, 2015 at 2:23 pm

          Sky-

          Yes, you will flush the cooling system first and refill it with water. Then, starting from a cold start you will slowly add the recommended amount of BlueDevil through the radiator cap.

          Thank you!

          -BDP

          • Khoury Staten on February 16, 2016 at 8:45 pm

            How much water should be put back in the radiator once it is flushed and before adding the Blue Devil?



          • BlueDevil Pro on February 17, 2016 at 9:25 am

            Khoury-

            Thank you for your question. After flushing the radiator, you should be filling the system back up to capacity, leaving just enough room for the recommended amount of the product. You can find your cooling system capacity in the vehicle’s owners manual.

            Thank you!

            -BDP



      • Keri Couture on August 21, 2015 at 12:44 am

        We are getting ready to purchase and use your product. I have read your instructions and I have a question. It says to turn the heater on but our blower motor is gone so no heat blows what should we do?

        • BlueDevil Pro on August 21, 2015 at 9:38 am

          Keri-

          As long as your vehicle will not overheat during the 50 minute idle then you do not have to worry about running the heater. This step is recommended simply to pull heat from the engine.

          Thank You!

          -BDP

          • Aj on January 6, 2016 at 7:30 pm

            What if it does over heat?what does that mean?



          • BlueDevil Pro on January 7, 2016 at 9:31 am

            AJ-

            Unfortunately, if the vehicle is overheating fairly quickly, it may mean that the leak or symptoms the vehicle is having are a little to extreme for the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Shanell on December 12, 2015 at 4:03 pm

        I have an Audi A4 Quattro that is belied to have a blown head , I’ve read many of these comment feeds and I’m wondering if I should keep my radiator completely empty or fill with water like it says in some of Your responses or do I fill with the specialty Audi antifreeze I have that is a concentrate and needs to be diluted or mixed with water ?

        • BlueDevil Pro on December 15, 2015 at 9:32 am

          Shanell-

          For best results, you should flush the cooling system and fill it with water prior to adding BlueDevil Head Gasket Sealer.

          If you have any further questions feel free to contact our tech support team at 888-863-0426.

          Thank you!

          -BDP

          • brandon on June 27, 2017 at 11:51 pm

            my truck 2003 dodge cummins 3500 is blowing black smoke out the back and has a loss of power and makes knocking knocking noises. and i can smell it burning oil out the ehaust. and had loss of oil



          • BlueDevil Pro on June 28, 2017 at 9:48 am

            Brandon-

            Thank you for asking about your Dodge 3500. Unfortunately, we do not manufacture a product intended to stop oil leaking from the head gasket, which based on your description, seems that is the case. A hard part repair may be your best option.

            Thank you!

            -BDP



      • Alejandro on March 2, 2016 at 11:09 pm

        My Audi A4 Quattro 1996
        I think has steel multilayered head gaskets. Will still work great?

        • BlueDevil Pro on March 3, 2016 at 11:50 am

          Alejandro-

          Yes, BlueDevil Head Gasket Sealer is compatible and will work in your Audi. Feel free to contact us at 888-863-0426 with any further questions.

          Thank you!

          -BDP

      • Todd C. on March 17, 2016 at 7:19 pm

        I have a 1995 Ford Windstar….I bought a bottle of the head gasket sealer to fix my leak…..do I need to drain all of the coolant in the radiator before adding the sealant?

        • BlueDevil Pro on March 18, 2016 at 9:45 am

          Todd-

          Thank you for asking about your Ford Windstar. As per the directions, you will be removing the thermostat and performing a cooling system flush, with the use of a radiator flushing agent, prior to adding the product. You will only be running the product with water in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

          • William Howes on May 15, 2016 at 1:22 pm

            The bottle says nothing about removing the thermostat, nor flushing the system first. Pleas explain.



          • BlueDevil Pro on May 16, 2016 at 3:25 pm

            William-

            There are two different Head Gasket Sealers that we manufacture.
            You may use either Head Gasket Sealer. The one you have is the “Pour N Go” (16 oz./white label) which is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

            The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. However, if the thermostat is difficult to remove or you would rather not then you can always use the “Pour N Go”. With the use of either product, be sure to follow the guidelines for the proper amount to use.

            Thank you!

            -BDP



          • Christiaan on August 31, 2016 at 12:56 am

            I am about to use your product, head gasket sealer. I read on the botel that i need to remove the thermostat before i start the process.
            What i would like to know is, when do i fit the thermostat again, after i had the vehicle run for 50 min or may i fit it before i start the 50 min process?



          • BlueDevil Pro on September 1, 2016 at 9:28 am

            Christiaan-

            Once you complete the 50 minute idle, allow the vehicle to cool off for a couple of hours (at least 2 hours). At that point, you would be able to put the thermostat back in. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Jason on June 4, 2016 at 12:49 pm

        Can u change head gasket later n use same heads or is it like liquid glass and ruin motor?

        • BlueDevil Pro on June 6, 2016 at 3:01 pm

          Jason-

          BlueDevil will not make any future repairs more difficult or harm any components of the engine.

          Thank you!

          -BDP

      • Rick on September 10, 2016 at 3:34 pm

        Could only get half in was cloging the hose? What ti do next

        • BlueDevil Pro on September 12, 2016 at 8:53 am

          Rick-

          It is important that you have drained enough fluid from the cooling system prior to adding the proper amount of BlueDevil Head Gasket Sealer so that enough BlueDevil can be added. Not using enough product may hinder the results of BlueDevil.

          Thank you!

          -BDP

      • Wanda on September 17, 2016 at 11:08 am

        What do I do if the water got into to the moter oil is tan stuff when take of oil cap

        • BlueDevil Pro on September 22, 2016 at 10:31 am

          Wanda-

          We recommend using BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/) to stop the water/coolant from leaking into your engine oil. For proper results we recommend changing your oil before and after the BlueDevil process.

          Feel free to contact us with any questions (888-863-0426).

          Thank you!

          -BDP

      • Steven ghio on September 21, 2016 at 12:00 am

        Hi, I have a 2000 Jag xkr with a blown head gasket. Car never overheated, white smoke disappeared on way to mechanic. Will not pay 5k for repair. Can I add 16 ounce seal and go to reservoir or do I need to disconnect top hose and do that way.? No radiator cap on car.fluid getting on spark plugs so idling rough. Do I change plugs before or after procedure?

        • BlueDevil Pro on September 22, 2016 at 10:25 am

          Steven-

          If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.

          You do not need to change the spark plugs before the BlueDevil process; you may wait until the process is complete and the engine has cooled back down.

          Thank you!

          -BDP

        • Sean Lytle on October 22, 2016 at 11:50 am

          I’m curious as to what happened with the Jaguar. I have a ’98 XJR with a bad head gasket.

          • BlueDevil Pro on October 24, 2016 at 12:20 pm

            Sean-

            Feel free to contact our technical support line at 888-863-0426 with any questions.

            Thank you!

            -BDP



      • Jake on December 19, 2016 at 8:35 pm

        I have an 03 bmw 325ci i do have a recevour rather than a radiator cap the top radiator hose goes to the thermostat assembly in the block by the water pump how should i do mine

        • BlueDevil Pro on December 20, 2016 at 10:59 am

          Jake-

          Thank you for asking about your BMW 325ci. If your vehicle only has a reservoir/overflow rather than a radiator cap instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there; it may be added into the hose or into the opening where the hose is disconnected.  Once it has been added reconnect the hose and start the idle from that point.

          Thank you!

          -BDP

      • Mario castro on February 7, 2017 at 8:22 pm

        I’m ready to use the blue devil but I have a question. I have water on my oil do I need to change the oil first or after the treatment?

        • BlueDevil Pro on February 8, 2017 at 8:53 am

          Mario-

          If you are getting water/coolant into the engine oil, we recommend changing the oil before and after the BlueDevil process. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Danielle on March 7, 2017 at 8:50 pm

        What do u do if the car gets hot while ur trying to have the car idle for the 50 mins. This blue devil repair stuff in in the radiator?

        • BlueDevil Pro on March 8, 2017 at 9:05 am

          Danielle-

          You would want to shut the vehicle off if it’s going to overheat during the 50 minute idle. Unfortunately, if the vehicle is unable to idle for the full 50 minutes, the leak or symptoms your vehicle is having may be a little too extreme for the BlueDevil Head Gasket Sealer to be effective. A hard part repair may be your best option.

          Thank you!

          -BDP

      • Denise Baron on April 22, 2017 at 6:54 pm

        Once thermostat is replaced do I pour the blue devil/water mixture back in that ran out while changing the thermostat

        • BlueDevil Pro on April 24, 2017 at 9:35 am

          Denise-

          The BlueDevil Head Gasekt Sealer only reacts to heat once. After the 50 minute idle and you shut the vehicle off, any extra BlueDevil in the system would be like extra water. It will not continue to react or continue to seal. It is not necessary to re-add the BlueDevil/water mixture back in to the system. You may refill it with your regular 50/50 mix.

          Thank you!

          -BDP

      • Shey on May 28, 2017 at 1:41 am

        So with the engine OFF I can add it straight into the engine through the end i take off?? And add the whole bottle??

        • BlueDevil Pro on May 30, 2017 at 4:06 pm

          Shey-

          What kind of vehicle are you running the product in? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of your application of the product and be able to make any appropriate recommendations.

          Thank you!

          -BDP

          • bruce on March 1, 2018 at 4:22 am

            2000 chevy ventura van has water leaking in front no water in oil



          • BlueDevil Pro on March 1, 2018 at 9:37 am

            Bruce-

            Thank you for asking about your Chevy Venture. Has the water leaking from the front been diagnosed as a head gasket leak? If so, you would be a great candidate for the BlueDevil Head Gasket Sealer (https://store.gobdp.com/head-gasket-sealer-38386/). Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Amy Stirewalt on June 15, 2017 at 11:51 pm

        Can I use blue devil pour and go if my car is over heating? ( not removing the thermostat)

        • BlueDevil Pro on June 16, 2017 at 8:47 am

          Amy-

          In order to get the benefit of using the BlueDevil Head Gasket Sealer, the vehicle would need to be able to idle for a full 50 minutes without overheating or stalling out. Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

          Thank you!

          -BDP

      • Dave on July 27, 2017 at 10:47 pm

        Does it work on steel multi layer gaskets

        • BlueDevil Pro on July 28, 2017 at 8:46 am

          Dave-

          Yes, the BlueDevil Head Gasket Sealer would work on steel multi layer gaskets. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Lance on August 3, 2017 at 1:36 am

        I put in the sealant before I put in the flush now I’m running for 60 minutes.
        Didn’t do flush.
        What do I do now?

        • BlueDevil Pro on August 3, 2017 at 9:16 am

          Lance-

          As long as the system was clean and free-flowing, the BlueDevil Head Gasket Sealer still would have been able to circulate and seal. Please contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Linda Hammond on October 16, 2017 at 12:46 pm

        my auto repair shop has had my car for eleven days now and stated it takes steps to put sealant in head gasket is this what is normal to do miss Linda

        • BlueDevil Pro on October 16, 2017 at 4:05 pm

          Linda-

          No, normally it should not take that long to complete the process of the using the BlueDevil Head Gasket Sealer. All in all, the process could be completed in about 6 hours, depending on any additional steps that may need to be taken ie. changing the engine oil, etc.

          Thank you!

          -BDP

      • Tony on November 18, 2017 at 11:41 am

        I changed my head gaskets on my ford ranger. It took me 3days to do it. It has a Miss on the #1 cylinder now. Been driving it and I found a small leak from the head in that area. Mechanic told me my heads were ok. Instead of tearing it back down I’m gonna put blue devil in it. Hope it works. Another guy I work with works on cars on the side and he says blue devil is the best. Wish me luck

        • BlueDevil Pro on November 20, 2017 at 4:12 pm

          Tony-

          Good luck with your application of the product! Feel free to contact our technical support line at 888-863-0426 with any questions.

          Thank you!

          -BDP

      • Menevia Hunter on December 4, 2017 at 10:22 am

        Do you have to drain the water out of your car after the gasket have been seal

        • BlueDevil Pro on December 4, 2017 at 12:58 pm

          Menevia-

          It is not necessary to drain your cooling system out after using the BlueDevil Head Gasket Sealer, however, you are not getting any additional benefit by leaving the product in the system. Either way would be fine. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Daniel williams on March 4, 2018 at 11:09 pm

        What do i do if my headgasket is blowing from my exhaust pressurizing the engine coolant?

        • BlueDevil Pro on March 5, 2018 at 10:04 am

          Daniel-

          We recommend applying the BlueDevil Head Gasket Sealer. To give yourself the best overall chance of BlueDevil working successfully is to remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with a low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave the plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Elizabeth M Ingram on July 3, 2018 at 4:07 pm

        How do I remove the radiator hose from a 2005 Ford explorer

        • BlueDevil Pro on July 9, 2018 at 9:28 am

          Elizabeth-

          An upper radiator hose connects the tope of the radiator to the top of the engine. You can disconnect the hose where it meets the radiator and use a funnel to pour the product in. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Karl on October 29, 2018 at 11:48 pm

        Hello. What is the set time of the “pour and go” bottle? and what is the set time for the “mechanic approved” bottle?

        what I am trying to ask you how long does it take the product to cure after you do the 50-minute process.?

        • BlueDevil Pro on October 30, 2018 at 10:42 am

          Karl-

          With both the Pour-N-Go Head Gasket Sealer and the “Mechanic Approved” Head Gasket Sealer(32 oz. yellow label), the product is sealing during the 50 minute idle. We recommend allowing the vehicle to cool off for a couple of hours after the 50 minutes is up, before topping it off with water/coolant or draining and refilling the system.

          Thank you!

          -BDP

      • Paul Hale on November 3, 2018 at 7:03 am

        Should I change my wheels and it has antifreeze and it before using the BlueDevil stuff

        • BlueDevil Pro on November 5, 2018 at 11:08 am

          Paul-

          Please contact our technical support line so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

          Thank you!

          -BDP

      • Wayne on February 15, 2021 at 4:56 pm

        If the oil is milky will the product still work or has it got to far gone

        • BlueDevil Pro on February 16, 2021 at 8:39 am

          Wayne-

          Water/coolant getting into the engine oil is a symptom the BlueDevil Head Gasket Sealer would be able to treat. As long as you are not losing water/coolant too quickly, you would be a good candidate for the product.

          Thank you!

          -BDP

      • Wayne Harrell on March 9, 2021 at 1:10 pm

        I just finished flushing my radiator with blue devil radiator flush and now I put blue devil head gasket sealer in but can I take it for a ride while the fifty minutes waiting time with engine running or wait the50 min before I go for a ride

        • BlueDevil Pro on March 9, 2021 at 1:49 pm

          Wayne-

          As per the directions, you will let the vehicle sit and idle for 50 minutes. You can not take it for a drive during this part of the process.

          Thank you!

          -BDP

    • dave on April 22, 2015 at 4:39 pm

      I have a 96 s10 4 cyl. No water in oil, but a pretty heavy coolant leak. I added pour and go as directed and am not loosing as much coolant but still loosing some. Can I add another bottle? Can doing so potentially harm anything or clog it up? Thanks

      • BlueDevil Pro on April 23, 2015 at 12:18 pm

        Dave-

        Please contact us at 888-863-0426 so that we can get a little more detail and make the best recommendation for your vehicle.

        Thank You!

        -BDP

        • Glen on May 19, 2015 at 10:28 am

          I am curious to read about how this played out. What was the final outcome regarding using another bottle?

        • Jeremy Wiggins on November 9, 2016 at 7:27 am

          I am wondering if this will work if the head gasket that is bad is on the exhaust side of engine.

          • BlueDevil Pro on November 9, 2016 at 8:31 am

            Jeremy-

            As long as the vehicle will maintain idle for a full 50 minutes, and you are not losing more than about a quart of water/coolant, you would be a great candidate for the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



    • Lisa on August 25, 2015 at 8:32 pm

      I gave s vanagon and can see the gasket leak do to the gasket blown out. .will your product work to fix the gap in the gasket?? And will your product make it hard to change the gasket at a later time??

      • BlueDevil Pro on August 26, 2015 at 10:09 am

        Lisa-

        Please contact our technical support line at 888-863-0426 so that we can get a little more information and help further diagnose your vehicle. Using the Head Gasket Sealer would not prevent or make it difficult to change the head gaskets at a later date.

        Thank you!

        -BDP

      • mike on October 6, 2015 at 12:40 pm

        Lisa: you go girl, on the diggin in & not being afraid to go do a pretty intense ‘Blue job!’ (…as opposed to a ‘Pink Job’ like my sis calls them) as (You can SEE) many men would be afraid to take on something of this deep an endeavor. I’m about to do a Second Mercedes with this, having great results on another a while ago. Hope yours worked out as well as my 1st! Mike, San Jose

    • Mark on September 5, 2015 at 7:26 pm

      I poured Blue Devil head gasket sealer pour-n-go in my radiator after I put water in it and in the overflow. The thing is, I was only able to put half of the bottle because the radiator is full of water already. However, I still had the engine run for 50 mins as directed. I checked underneath if there’s still leak and the gauge, if it’s overheating. Temp level is normal (short of middle) and no overheating for 50 mins and no sign of leakage after 20 mins of engine running.

      My question is, do I still have to redo the procedure to Finnish off the bottle?

      • BlueDevil Pro on September 8, 2015 at 11:00 am

        Mark-

        If you are no longer experiencing a leak, then you would not use the remainder of the bottle. It seems that the half of the bottle used was enough to seal the leak in your vehicle, even though the directed amount would have been the full 16 oz. You should be good to go at this point. Feel free to contact us if you have any questions at 888-863-0426.

        Thank you!

        – BDP

    • Philip Reed on September 15, 2015 at 12:28 am

      I have a 2003 BMW 325i the instructions say you take out the thermostat but on the 325i the thermostat is embedded inside the tube can I still run the Blue Devil with a thermostat inside

      • BlueDevil Pro on September 15, 2015 at 4:01 pm

        Phillip-

        If you are unable to remove the thermostat, we would recommend using the BlueDevil Pour-N-Go Head Gasket Sealer, found here: http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/ . The removal of the thermostat is not a required step with the BlueDevil Pour-N-Go Head Gasket Sealer.

        Thank you!

        -BDP

        • joey on November 5, 2015 at 11:24 pm

          Do your car have to have water in it while going through the process

          • BlueDevil Pro on November 6, 2015 at 10:13 am

            Joey-

            Yes, you should have the cooling system full with either water or fresh antifreeze.

            Thank you!

            -BDP



        • Steede Maxey on February 11, 2016 at 10:06 pm

          I have a 1999 Mercury Sable with a blown head gasket. My question is will it really work or am I wa sting time and money because my mother had it applied to her 1999Ford Taurus and it didn’t work and was told that it is only a temporary fix.

          • BlueDevil Pro on February 22, 2016 at 3:50 pm

            Steede-

            The BlueDevil Head Gasket Sealer carries an overall success rate of over 90%. As long as the vehicle will idle for 50 minutes without stalling out or overheating and will not lose more than about 1 quart of water/antifreeze during that run then there is a very good chance BlueDevil will seal it. Once BlueDevil creates a seal it is a permanent fix.

            Feel free to contact our tech support team at 888-863-0426 with any further questions.

            Thank you!

            -BDP



    • dan on October 13, 2015 at 10:12 am

      You have to pour it in the radiator.

    • Jon on April 29, 2016 at 9:04 am

      Do i have to change my oil before i put the blue devil in

      • BlueDevil Pro on April 29, 2016 at 9:14 am

        Jon-

        If you are noticing signs of water/coolant in the engine oil then we do recommend changing the oil before and after the BlueDevil process.

        Feel free to contact us at 888-863-0426 with any further questions.

        Thank you!

        -BDP

    • Peter Krav on April 29, 2016 at 5:49 pm

      I have a 95 gmc sonoma with a minor heater core leak, the leak is internal so i have coolant leaking fr under my dashboard onto my passenger floor. Will this product work? And where do i add it to on this specific car? Thanks

      • BlueDevil Pro on May 2, 2016 at 10:23 am

        Peter-

        Thank you for asking about your GMC Sonoma. Yes, the BlueDevil Head Gasket Sealer would treat a heat core leak. You will add the product directly into the radiator through the radiator cap. If the vehicle only has a reservoir or overflow tank, with the vehicle off and engine cold, you may disconnect the upper radiator hose, pour the product in through there, reconnect the hose, and then start the idle from that point. Feel free to contact our technical support line at 888-863-0426 with any other questions.

        Thank you!

        -BDP

    • Roy on July 3, 2016 at 3:44 pm

      Do you leave heater on full for the 59 min while idle

      • BlueDevil Pro on July 5, 2016 at 8:40 am

        Roy-

        Yes, the heater should remain on the “max” setting during the entire 50 minute idle.

        Thank you!

        -BDP

    • Jerry Avilez on September 26, 2016 at 10:16 pm

      I have a 2002 Honda Accord. I recently used Blue Devil and brother I am so far really surprised and happy! This stuff actually works! Now let’s see if it passes the rest of time… I’ll let you all know. ‘

    • Paul on December 3, 2016 at 8:38 pm

      I’m not sure about the final step 6 on bottle:

      “Let engine cool before installing new thermostat. Drain enough fluid to refill with compatible anti-freeze”.

      So the wafer+blue devil+antifreeze mixture is ok for below freezing temperatures?

      Or is it better to drain out all of the water+blue devil and refill with 50/50?

      • BlueDevil Pro on December 6, 2016 at 9:24 am

        Paul-

        The BlueDevil Head Gasket Sealer only reacts to heat once (one heat cycle). After the 50 minute idle and the vehicle cools, any extra BlueDevil in the system would be like extra water. You would be fine either way. You can drain enough fluid to add your compatible antifreeze or you can completely drain the system and start over with fresh water and antifreeze for your 50/50 mix.

        Thank you!

        -BDP

    • Ashley on December 13, 2016 at 5:43 pm

      I have an 85 el camino and none of my climate controls do anything. Will that affect an application of Blue Devil Head Gasket repair or can i complete the procesure without running the heat?

      • BlueDevil Pro on December 14, 2016 at 9:35 am

        Ashley-

        Thank you for asking about your Chevy El Camino. The direction stating to “turn heater to Max” is to draw heat from the engine to keep it from overheating during the 50 minute idle. As long as the vehicle is not going to overheat, not running the heat wouldn’t be an issue.

        Thank you!

        -BDP

    • Dawn p Boykin on March 2, 2017 at 6:00 pm

      I had guy at auto parts just pour it into my reservoir with my coolant n its thick n looks as if its not going down. What did they do wrong. Is my car history now

      • BlueDevil Pro on March 3, 2017 at 9:05 am

        Dawn-

        If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there (it may be added into the hose or through the opening).  Once it has been added reconnect the hose and start the idle from that point. Feel free to contact our technical support line at 888-863-0426 with any other questions.

        Thank you!

        -BDP

    • Raymond greer on December 26, 2017 at 3:21 pm

      Hello my name is Raymond Greer and I use your product to seal my head gasket it sealed where the radiator fluid was going into my Oil but now I hardly have no heat I feel heat on both sides of the heater hoses but there’s hardly any pressure what would you think would be my issue thank you for your comments

      • BlueDevil Pro on December 28, 2017 at 11:16 am

        Raymond-

        Have you attempted to bleed the system of any potential air pockets still trapped in the cooling system? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

        Thank you!

        -BDP

    • Dielshaan on December 29, 2017 at 10:33 pm

      What gaurenteis is on blue devil gasget repair

      • BlueDevil Pro on January 2, 2018 at 8:22 am

        Dielshaan-

        Our products carry a money-back guarantee.

        Thank you!

        -BDP

    • Jim on September 9, 2018 at 11:40 am

      Does it work if your car heater don’t work

      • BlueDevil Pro on September 10, 2018 at 9:48 am

        Jim-

        The reason for the direction of putting the heater on, blower to the max, is to draw heat from the engine to help from overheating during the 50 minute idle. As long as the vehicle isn’t going to overheat, the product should be able to help seal the leak.

        Thank you!

        -BDP

    • Robs Ortega on December 7, 2020 at 4:15 pm

      Ok so I’m going to try and repair my blown head gasket myself and I would really like to know exactly what tools I need or should use for the job. I’m driving a 2008 Jeep liberty sport 3.7l v6 2wd …… Also I’m replacing the valve covers what tools do I need for that as well

      • BD Auto Pro on December 9, 2020 at 9:27 pm

        Robs,

        For a job that big, we would really recommend getting a repair manual for your Jeep. There are a lot of torque specs and sequencing help that the repair manual will be able to provide. You can read through the procedure beforehand to learn what you might need. For starters you’ll need a full socket set, the largest socket you will probably need would be for the crank pulley bolt. You’ll also want an accurate torque wrenches both in inch-pounds and foot-pounds. We would also recommend a camera to grab pictures of the disassembly process to make sure everything goes back together correctly. Besides that, you’ll want basic hand tools, gasket scrapers, penetrating oil, etc. Lastly, we would recommend having your heads checked by an engine shop while you have them off for flatness and valve condition as well as checking the valve seats.

        Thanks again for your question!
        -BD Auto Pro

  2. Ken on June 25, 2014 at 8:13 pm

    I see that the instructions indicate removal of the thermostat. I have seen horror stories about plugged heater cores. I have a van with a front/rear heater core. Would it be ok to bypass the heater cores while running the first 50 minutes? (I haven’t looked to see how difficult that would be yet). My thermostat, radiator and water pump have all been replaced in the last 1000 miles so I don’t think they have any buildup yet, but the heatercores have over 200,000 miles on them.

    • BlueDevil Pro on June 27, 2014 at 2:42 pm

      Ken,

      Yes, you can bypass the heater core. If you have further questions, please call our tech line at 1.888.863.0426.

      Thanks,
      -BDP

      • Antonio on October 19, 2014 at 6:41 am

        I am under the impression that the poor and go formula does not require a radiator flush or the removal of the thermostat? Is that correct, or not?

        • BlueDevil Pro on October 22, 2014 at 8:25 pm

          Antonio-

          Yes, that is 100% correct. The BlueDeveil “Pour N Go” is an easy-to-use formula.

          -BDP

          • Greg Tripp on August 30, 2015 at 9:45 am

            You seem to have conflicting answers from Pour and Go techs here.

            In an earlier post you tell someone that the system has to be flushed and filled before the sealer and here you tell someone that it is fine to just pour it in….with antifreeze. Which way works best might be the question?

            BlueDevil Pro on August 18th, 2015 – 2:23pm
            Sky-

            Yes, you will flush the cooling system first and refill it with water. Then, starting from a cold start you will slowly add the recommended amount of BlueDevil through the radiator cap.

            Thank you!

            -BDP



          • BlueDevil Pro on August 31, 2015 at 11:07 am

            Greg-

            There are two different Head Gasket Sealers.

            You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

            The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. However, if the thermostat is difficult to remove or you would rather not then you can always use the “Pour N Go”. With the use of either product, be sure to follow the guidelines for the proper amount to use.

            If the system appears to be dirty or the antifreeze has not been changed in a long time then it would be a good idea to flush the system with the sue of either of our BlueDevil products.

            Feel free to contact us at 888-863-0426 with any questions.

            Thanks!

            -BDP



  3. Craig on June 30, 2014 at 10:53 pm

    Any way I can use pour and go in my 4.3L V6 Mercruiser boat motor with an out drive, no radiator?

    • BlueDevil Pro on July 1, 2014 at 2:19 pm

      Craig,

      The product could only be used on an in-board motor.

      -BDP

  4. Josh on July 4, 2014 at 9:16 pm

    I have a volvo penta 2.3 inboard motor with heat exchanger tank but I blew head gasket today can I use this stuff to fix the head??

    • BlueDevil Pro on July 8, 2014 at 1:09 pm

      Josh,

      Our products are formulated for automobiles only. We have heard people use it with success in their inboard motors but we can’t approve or disapprove using it for your boat.

      If you need further assistance please give our tech line a call at 1.888.863.0426.

      -BDP

  5. pete panayi on July 21, 2014 at 4:53 pm

    i have a blown head gasket on a 99 deville. i removed the thermostat and have radiator flush in the system. can i add the blue devil head gasket sealer with the radiator flush in the system or do i need to drain it.

    • BlueDevil Pro on July 22, 2014 at 1:45 pm

      You should drain the cooling system down and refill it with straight water prior to adding BlueDevil.

      • Dan on February 24, 2018 at 8:07 pm

        Water or coolant?

        • BlueDevil Pro on February 26, 2018 at 9:27 am

          Dan-

          With the use of the BlueDevil Head Gasket Sealer (32 oz. yellow label), you would be running the product with only water in the system. When using the BlueDevil Pour-N-Go Head Gasket Sealer (16 oz. white label), you could run it with either water/coolant. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

    • steve on April 29, 2015 at 1:41 am

      Hello my name is steve I have a 93 deville 4.9 with a blown head gasket and I am thinking of useing this product did it fix your 99 deville a shop told me changing the gaskets could potentially couse problems to the bottom end so naw I’m clueless on what I should do

      • BlueDevil Pro on April 29, 2015 at 9:40 am

        Steve-

        We have had success in using the BlueDevil Head Gasket Sealer in Northstar engines. Feel free to contact our tech support team at 888-863-0426 with any questions you may have about the use of BlueDevil and your Cadillac.

        Thank You!

        -BDP

  6. 01bmw on July 26, 2014 at 12:03 pm

    I have 01 e38 or 01 740il BMW
    White smoke after car failed I charge radiator and warterpump and the hoses and thermostat . So I know when it over heated it was a chance I messed up the heads . My question is how and what to do to try this system I’m my car. Thank you .

    • BlueDevil Pro on July 29, 2014 at 5:51 pm

      Give our tech line a call at 1.888.863.0426 to discuss any questions you may have about the installation of our products.

      -BDP

  7. jacob on August 17, 2014 at 4:06 am

    Will it work on 2004 oldsmobile alero 3.4l. It has water in oil and runs hot 30 minutes after driving.

    • BlueDevil Pro on August 19, 2014 at 5:33 pm

      Jacob,

      Yes, it will potentially work in your Oldsmobile. Due to water being in the oil, you will want to change the oil before and after the BlueDevil process.

      We would strongly recommend that the thermostat is removed and left out for the 50 minute idle; this will help keep the engine temperature down. As long as the vehicle is able to idle for the recommended 50 minutes, without stalling or overheating, you will have a great chance at sealing the leak.

      • Melissa on April 17, 2015 at 11:01 pm

        I have a 97 nissan altima with a blown head gasket it cannot run for 50 min without it overheating can I still try to use this product?

        • BlueDevil Pro on April 20, 2015 at 11:17 am

          Melissa-

          In order for the BlueDevil Head Gasket Sealer to work properly the vehicle should be able to idle for a full 50 minutes without overheating or stalling out. If it is overheating prior to that amount of time then the leak may be a little bit too large for what BlueDevil is intended to fix.

          Thank You!

          -BDP

          • Joshua R on July 3, 2015 at 2:45 pm

            I pumped coolant all through the crankcase of ford 4.2 v6. changed oil and oil filter. freed hydrolock through spark plug openings. During pretreatment coolant flush after removing thermostate. I obviously recontaminated oil. I want the engine to last the 50 min of the BD cycle so I am changing the oil again and will keep fingers crossed.
            I am guessing, if sucessful, I will have to change the oil and filter after the BD cycle during which there must be some further contamination.
            Thanks
            Hopeful



          • BlueDevil Pro on July 8, 2015 at 3:55 pm

            Joshua,

            One further thing we would recommend doing before you start the engine again is removing the oil pan as well. Oil will always float on water so there may be some baffles in your oil pan where the water will remain and not be drained out through the drain plug of your oil pan. It may be a tedious job, but it could help save your engine’s main bearings and will help guarantee you don’t have standing water in your oil pan.



      • Joseph on July 13, 2015 at 10:08 pm

        This is some gooooddddd stuff thanks

        • David. on March 5, 2016 at 2:35 pm

          I had a blown head gasket an wuss was stuck 30 miles from home and I bought the Blue Devil 16 oz pour and go. I siphoned out a little coolant and poured the product in and within 50 minutes tha white smoke out of the tailpipe went away and made it home, saving me tow charges and major mechanics costs. Great product !

  8. Paul on September 3, 2014 at 5:41 am

    I just changed my thermostat and hoses, two days ago and tonight i put in Blue Devil (followed instructions)…unfortunately when I i gave it a test ride after its 50 minutes after adding it in…the bottom radiator hose disconnected because i didn’t put the clamp on properly! There was coolant and blue devil spots everywhere! Should I retry with Blue Devil…or will it damage something.

    • BlueDevil Pro on September 3, 2014 at 3:01 pm

      Paul-

      You may not need to add more BlueDevil at this point. Because the vehicle did make it through the full 50 minute idle it is possible that the seal was already created by BlueDevil. At this point, we recommend refilling the cooling system and clamping everything back up. Once you have done so you may go ahead and drive/run the vehicle to determine whether or not it has sealed.

      Feel free to contact our tech support team at 888.863.0426 with any further questions.

  9. Phil on September 6, 2014 at 9:11 pm

    i have an e46 bmw how would i add blue devil it has an overflow instead of a radiator

    • BlueDevil Pro on September 8, 2014 at 5:34 pm

      Phil-
      If your vehicle has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold, you may add the product through the top radiator hose. Once it has been added reconnect the hose and start the idle from that point.

      Feel free to contact us with any further questions.

  10. Bill Farmer on September 15, 2014 at 5:48 am

    just done a cylinder leak down test on my daughters 1984 chevy k10 truck i established that the compression is leaking out thru the #4 and #6 cylinder so convinced its blown head gasket but i dont have water in oil and no smoking will blue devil still fix it

    • BlueDevil Pro on September 15, 2014 at 1:53 pm

      Bill-

      Yes, your Chevy would be a great candidate for using BlueDevil.

      Feel free to contact our tech support team at 888.863.0426 for further direction.

      -BDP

  11. Kevin on September 19, 2014 at 4:18 pm

    1998 Neon, does not overheat, but goes through about 1 gallon of water every 2 days. There is no water in the oil, water/coolant is full of oil (resembles chocolate milk). Is this repair a good canidate for your product?

    • BlueDevil Pro on September 22, 2014 at 5:58 pm

      Kevin-

      Unfortunately, none of our products are designed to stop oil from entering the cooling system; they will work for the other way around, coolant into the oil, but not oil into the coolant.

      -BDP

  12. Israel livas on September 20, 2014 at 7:39 pm

    I have a 99 mercury sable 3.0, my reservoir tank failed I replaced it and then white smoke started comming out tailpipe. I had pure water in radiator and all of water was rust color.my car never actually overheated but other mech.tell me blown head gasket $800. Will blue devil work on my car ? My car still runs like a champ and smoke isn’t constant, but temp.still goes up n down. What should I do please help me I’m a plumber not mechanic.

    • BlueDevil Pro on September 22, 2014 at 5:59 pm

      Israel-

      Yes, the BlueDevil Head Gasket Sealer should work in your Mercury. You will definitely want to run a full cooling system flush and refill prior to adding the product. If you run into any questions you may contact our tech support team at 888.863.0426.

      -BDP

  13. Rizal on September 21, 2014 at 5:22 pm

    Hi,

    I just used Blue Devil today on my Peugeot 206 1.4 1999. I didn’t remove the thermostat (it’s new as I replaced it a few weeks ago). Does it affect anything? How long should I let blue devil in the system? FYI, I drained the radiator (using radiator flush to clean it) before using blue devil. After using blue devil, I can see a little bit of white smoke coming out of the exhaust. Is it normal? Thank you.

    • BlueDevil Pro on September 22, 2014 at 6:00 pm

      Rizal-

      The direction that asks the thermostat to be removed has nothing to do on whether or not the thermostat is new or old. We require the thermostat to be removed to create a free flow for the full 50 minute idle while the product is active. However, it has still worked in the past when the thermostat was not removed but the overall success rate is somewhat lower.

      BlueDevil may remain in the system indefinitely or you may drain it any time after the vehicle has cooled down. There is no benefit to leaving it in or taking it out.

      Keep in mind the system may produce steam or smoke for a few days until the moisture left over in the system has completely cleared out.

      -BDP

  14. clint on September 23, 2014 at 2:51 am

    I have a vw beetle 2002 1.8t just curious if I can put your product inside my radiator just as a safety precaution? Not sure if it is a head gasket but it’s a possibility. Would it hurt? I mean worse cast scenario is the head gasket is leaking and your product fixes it right? Thanks in advance

    • BlueDevil Pro on September 24, 2014 at 1:30 pm

      Clint-

      You do not want to use our BlueDevil Head Gasket Sealer as preventative maintenance. You should confirm as to whether or not there is a head gasket leak before considering the use of BlueDevil.

      -BDP

  15. zane on September 29, 2014 at 6:37 am

    I have a 2001 impala that leaks water in the oil and has white smoke it also overheats very easy I was told to put blue devil in my engine but to put the radiator hoses together and the heaters hoses together and that would fix it what is your input.

    • BlueDevil Pro on October 1, 2014 at 6:14 pm

      Yes, you may use either product as long as the vehicle can idle for 50 minutes without overheating or stalling out. In addition to the directions, you will want to change the oil before and after the BlueDevil process to ensure proper results.

      The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.
      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your capacity, you will be using 16 ounces either way.

      Feel free to contact us at 888.863.0426 with any further questions.

      • Jessi on September 24, 2015 at 1:14 pm

        And what if your car does overheat…?

        • BlueDevil Pro on September 24, 2015 at 1:15 pm

          Jessi-

          If the car will overheat prior to the 50 minute idle being complete then that is usually an indication that the problem is too extreme for what BlueDevil is intended to fix and will require hard part repair.

          Thank you!

          -BDP

  16. Brenda on October 1, 2014 at 5:06 pm

    2001 Pontiac Grand Am 6 cyl 3.4 engine. Daughter has experienced loss of coolant but no obvious leak. Temp gauge has gone to hot but she stopped & turned engine off. Pressure test okay. Today, while driving, sudden clanking/rapping type noise & lost power steering (fluid ok, belt new & ok). Stopped vehicle, upon trying to restart, louder clanking/rapping noise. Removed oil cap, oil appears “creamy yellowish/white” & sludge like. Vehicle has not fully overheated … yet. Suspect blown head gasket. Will Blue Devil help under the described circumstances?

    • BlueDevil Pro on October 2, 2014 at 5:28 pm

      Brenda-

      You should first change your oil to see if that helps with the “clanking” noise you are experiencing. If it does, then you would be safe in using the BlueDevil Head Gasket Sealer. If the noise continues after changing the oil then you may want to take the car into a certified mechanic to have it further diagnosed.

      If you decide to use the BlueDevil then make sure that the oil is changed before and after the process.

      Feel free to contact us at 1.888.863.0426 with any questions.

  17. Steve on October 1, 2014 at 10:27 pm

    Water in my oil on my boat inboard 3.0 omc will this stop it

    • BlueDevil Pro on October 2, 2014 at 5:28 pm

      Steve-

      Yes, the BlueDevil Head Gasket Sealer will work on your inboard boat. You will want to change the oil before and after the BlueDevil procedure to ensure proper results. Also, be sure to follow the capacity chart so that the correct amount of BlueDevil is used.

      Feel free to contact us at 888.863.0426.

    • Stephanie on June 15, 2015 at 10:58 pm

      Do i leave the heater on full blast the whole 50 mins? And if my car starts over heating during the 50 mins what do i do

      • BlueDevil Pro on June 26, 2015 at 2:19 pm

        Yes, the heater should be left on max for the full 50 minute idle, when applying the BlueDevil Head Gasket Sealer. If the car starts overheating prior to the end of the 50 minutes you should shut the engine down and allow it to cool down.

        Thank You!

        -BDP

  18. Gary on October 23, 2014 at 6:40 am

    Recently i have been having overheating problems and it blow out a hose to my heater on my 2002 Dodge Durango. Living in Hawaii i had the mechanic seal off the heater since we have no need for heaters here. It now appears i have a small leak in my head gasket and i am looking to use your product Pour and Go. However it says to run the heater first. I am guessing this is so it doesnt clog up the heater core. Hopefully since i dont have a heater i can just use Blue Devil from after that part of the instructions. Can you please let me know if my line of thinking is right here or how i should proceed.
    Thanks, Gary

    • BlueDevil Pro on October 27, 2014 at 3:03 pm

      Gary-

      The reason we recommend running the heater on max during the idle is to help pull heat off the engine. As long as your vehicle can idle for 50 minute period without stalling out or overheating then you will have no issues in getting proper results from the BlueDevil whether or not the heater is connected. You will simply ignore the step that mentions running the heater on max.

      Feel free to contact our tech support team at 888.863.0426 with any questions.

      -BDP

  19. Wm on October 24, 2014 at 12:48 pm

    Hi, I’ve used blue devil with success in the past. Great product! I have a 1995 Tbird with blown head gasket and would like to use blue devil to save it. The heater does not work. I haven’t a clue as to why the is not working, only that the fan is not blowing and no heat or ac. This is a car my son got and history is unknown. Wondering how to use blue devil or if it can be used in this situation. Any help appreciated. Again great product, saved my daughters’ 2002 PT cruiser, runs great 16 months after treatment.

  20. michele on October 25, 2014 at 6:09 pm

    Hi. Is it ok to add blue devil through the reservoir if I do not have access to the radiator? I know I can remove the top radiator hose but that is difficult on my e46 BMW engine.

    • BlueDevil Pro on October 27, 2014 at 4:57 pm

      Michele-

      If your vehicle has a reservoir/overflow rather than a radiator cap instead of pouring it through the reservoir/overflow, with the car off and engine cold, you may add the product through the top radiator hose. Once it has been added reconnect the hose and start the idle from that point.

      You mentioned that the top hose may be difficult to access but we strongly recommend that it is added through that hose rather than the reservoir.

      -BDP

  21. kelly on October 30, 2014 at 7:33 pm

    i have a 85′ vw vanagon. it has 50 percent loss of compression in one cylinder and after running for a hour i see bubbles in the overflow tank, however it is not leaking anti freeze or blowing smoke. i feel this is a head gasket issue and i need blue devil, what do you think? and can i use it on a vanagon?

    • BlueDevil Pro on October 31, 2014 at 11:10 am

      Kelly-

      As you mentioned, it sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. We would recommend using the BlueDevil Head Gasket Sealer. It is 100% safe to use on your Vanagon

      To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Feel free to contact us with any questions.

      Thank You,

  22. Kristina on October 31, 2014 at 7:57 am

    hi I have an 2000 Oldsmobile Alero in I was recently told I have a blown head. but he didn’t know if the head was crack are is it just blown so I really need to know is it possible that the blue devil will work.

    • BlueDevil Pro on October 31, 2014 at 2:47 pm

      Kristina-

      Whether you are dealing with an actual crack or any type of breach in the head gasket the BlueDevil Head Gasket Sealer will seal either type of leak.

      Feel free to contact us at 888-863-0426 with any questions along the way.

      Thanks,

      BDP

  23. Stacey on November 1, 2014 at 10:24 pm

    I took thermostat out and reconnect hose before using Blue Devils today I did notice there was slight dripping from housing. Will that affect the effects of Blue Devil.

    • BlueDevil Pro on November 3, 2014 at 3:41 pm

      Stacey-

      The way you can get around the leaky housing is by taking the thermostat with housing and modifying it so that the middle piece does not close; you may remove this piece or gut the middle of the thermostat. By doing so you will create a free flow and still be able to have the full housing installed.

      Once the BlueDevil process is complete you will need to replace the thermostat.

      Feel free to contact me with any further questions.

      Thanks,

  24. johnny vargas on November 4, 2014 at 8:35 pm

    I have a 04 Cadillac deville it blows white smoke out the tail pipes I want to use
    Blue devil what should I do to fix the blown head gasket problem ?

    • BlueDevil Pro on November 5, 2014 at 9:47 am

      Johnny-

      You will need to use the BlueDevil Head Gasket Sealer (32 ounce bottle with a yellow label). Be sure to follow the directions exactly, including removing the thermostat and flushing the cooling system prior to adding the product.

      Feel free to contact our tech support team at 888-863-0426 with any questions along the way.

      -BDP

  25. Robert on November 7, 2014 at 6:25 pm

    I have a 97 Mustang. 3.8 n I think I have a cracked head or blown head gasket. I do not have. a reservoir tank. n I just wanted to kno whick label to use. and what should I di or how should I use this product..would appreciate. any advice, so my car will be fixed. n plz answer me bk ASAP. as this is my only ride. thanks.

    • BlueDevil Pro on November 10, 2014 at 1:17 pm

      Robert-

      First of all, we are sorry to hear that you are having issues with your Mustang.

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your capacity, you will be using 16 ounces either way.

      Thanks,

      -BDP

  26. Vera jackson on November 8, 2014 at 11:08 am

    I have a 96 ford windstar n blue devil works good I just want to know how long does it last til I have to do it again

    • BlueDevil Pro on November 10, 2014 at 11:51 am

      Vera-

      BlueDevil creates a permanent seal and should not have to be used again.

      -BDP

      • Elaine on December 31, 2014 at 8:18 pm

        Hi,

        So my dad used twice the amount of blue devil for his ’95 tacoma and it worked great for 10 months. Then the same problems started again recently. IS it okay to use blue devil again?

        • BlueDevil Pro on January 2, 2015 at 12:47 pm

          Elaine-

          It is safe to reapply the BlueDevil Head Gasket Sealer at this point. You should use the recommended amount to ensure best results.

          Feel free to contact our tech support team at 888.863.0426 with any questions.

          -BDP

  27. wes on November 21, 2014 at 4:42 pm

    if my truck has water in the oil and is smoking badly, will blue devil fix my problem

    • BlueDevil Pro on November 24, 2014 at 3:39 pm

      Wes-

      Yes, the BlueDevil Head Gasket Sealer will still work in this instance. To ensure best results you will want to change your engine oil before and after the BlueDevil process.

      -BDP

  28. Greg on November 28, 2014 at 1:14 pm

    Hi, I have a 2000 civic 1.6L. I’m curious what the recommended amount of blue devil would be. Can I use the 16oz bottle, or will I need the 32oz? Thanks for the help

    • BlueDevil Pro on December 3, 2014 at 2:33 pm

      Greg-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your capacity, you will be using 16 ounces either way. I would still use a flushing agent to flush your cooling system prior to using the product to ensure proper results.

      You may contact our tech support team at 888-863-0426 from 8:00 AM – 5:00 PM (EST) Monday through Friday to speak with a product specialist.

      Thanks,

      BDP

  29. Byron Boone on November 28, 2014 at 1:58 pm

    Ihave a 98 Cadillac deville with a blown head gasket, which product do I need to use, and does a blown head gasket cause your car to misfire?

    • BlueDevil Pro on December 1, 2014 at 2:54 pm

      Byron-

      A blown head gasket can cause your car to misfire. The best product to use for your Cadillac is the BlueDevil Head Gasket Sealer (32 ounce, yellow label). The product can be seen here: http://store.gobdp.com/head-gasket-sealer-38386/

      Feel free to contact our tech support team at 888-863-0426 with any questions.

      -BDP

  30. shavon on November 29, 2014 at 10:38 am

    I have a 2002 Dodge durango and I went to a certified mechanic and it’s 2700 dollars to fix. I don’t really have anyone to take off the thermostat and flush out the radiator. So I settled with the pour and go. Once I pour it in and refill it with fluid do I let it sit running or drive it?

    • BlueDevil Pro on December 1, 2014 at 2:52 pm

      Shavon-

      After the recommended 50 minute idle is complete you should shut the engine off and allow it to cool down (at least 2 hours). Once it has cooled you may drive the vehicle as normal.

      -BDP

    • Jermaine Burns on May 7, 2015 at 12:22 am

      I have a 2003 chevy impala and I used blue devil. It ran excellent through the 50 minute idle process but I drove it 30 minutes later and the leak once again occurred. Will the bluedevil still work after this incident or do I need to use another one.

      • BlueDevil Pro on May 15, 2015 at 2:21 pm

        Jermaine-

        Please contact our tech support team at 888-863-0426 so that we may discuss the use of BlueDevil and your Impala in more detail. We would like to go over what you saw after the first application and what the current condition of the car is.

        Thank You!

        -BDP

  31. Bob Warren on November 29, 2014 at 1:12 pm

    What size bottle do I need for a 1999 Buick Century 3.1?

    • BlueDevil Pro on December 1, 2014 at 3:01 pm

      Bob-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. Based on your capacity, you will be using 16 ounces either way. I would still use a flushing agent to flush your cooling system prior to using the product to ensure proper results.

      Feel free to contact us with any further questions.

      Thank You,

      -BDP

  32. maryann on December 3, 2014 at 6:20 pm

    I was going to but the product but my heater does not work right now but I have a blown head gaskit , I am replacing my water pump cause its bad, but ur in structions sat have the heater on high when using what do I do

    • BlueDevil Pro on December 4, 2014 at 10:34 am

      Maryann-

      As long as the vehicle will idle for the full 50 minutes without overheating or stalling out then you can still use BlueDevil without having to run your heater. The reason we ask that the heater is run on max is to help pull heat off of the engine and prevent it from overheating.

      -BDP

      • maryann on December 6, 2014 at 12:05 am

        I wondering also would the pour and go work just as well and the other one what is the difference,

        • BlueDevil Pro on December 8, 2014 at 4:13 pm

          MaryAnn-

          You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

          The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use; a 4 or 6 cylinder will only require 16 ounces of either product.

          Feel free to contact us at 888-863-0426 with any further questions.

          -BDP

          • maryann on January 3, 2015 at 12:37 pm

            The pour and go, what are the instructions? Would I add it in the resivore where I add the anti freeze goes? Does the antifreeze thing have to be filled? I’m going ng with the pour and go cause I have no one to help me, do it.



          • BlueDevil Pro on January 7, 2015 at 1:20 pm

            Maryann-

            If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.

            The full directions for the BlueDevil Pour N Go can be seen here: http://store.gobdp.com/pour-n-go-directions/

            Feel free to contact us at 888-863-0426 with any further questions.

            Thanks,

            -BDP



  33. tony on December 5, 2014 at 2:22 am

    I have a 98 jeep cherokee. I noticed it doesnt overheat but they did mark it with a misfire cylinder 1. They took the sparkplug out and some water is spitting out a bit. I dont lose coolant,but mech said its the head gasket. A little water runs out the muffler and starts to have little hesitatiin while running. Will this devil fix this?

    • BlueDevil Pro on December 5, 2014 at 12:07 pm

      Tony-

      Yes, BlueDevil Head Gasket Sealer will remedy the current symptoms you are experiencing. It is sounding like you are noticing the early symptoms of a blown head gasket.

      Feel free to contact our tech support team at 888-863-0426 with any questions.

      -BDP

  34. step on December 5, 2014 at 4:34 pm

    I have a 05 altima wit a blown head gasket the oil and water already done mix wat should I do?
    And do ur product clog up ur radiator?

    • BlueDevil Pro on December 8, 2014 at 4:10 pm

      Step-

      Yes, you can definitely still use the BlueDevil Head Gasket Sealer with success. You will want to change the oil before and after the BlueDevil process to ensure proper results.

      Thanks,

      -BDP

  35. beau martinez on December 8, 2014 at 8:16 pm

    i have a blown head gasket. i put water in the radiator and it goes to the engine and oil. smoke comes out tail pipe. will this product help me? or just go to the oil engine

    • Zach Friedley on December 10, 2014 at 9:15 am

      Beau-

      Yes, the BlueDevil Head Gasket Sealer will remedy all of the symptoms you have described. You will want to change your oil before and after the BlueDevil process to ensure best results.

      Feel free to contact our tech support team at 888-863-0426 with any questions.

      Thanks,

      -BDP

  36. Klynt on December 10, 2014 at 4:06 pm

    I bought a bottle of Blue Devil 32oz. I blew a head gasket in a 1999 Chrysler 300M and there is oil in the coolant tank. If I flush the radiator and add the Blue Devil as it is instructed to do, will it work in this instance?

    • BlueDevil Pro on December 10, 2014 at 4:24 pm

      Klynt-

      Unfortunately, we do not manufacture a product that will work once oil has entered the cooling system. It will work if you are getting water/coolant pushing into the oil but not the other way around.

      -BDP

  37. Tony on December 12, 2014 at 9:39 am

    I have a 2001 Cadillac Deville no water/oil mixture. Just a little steam from tail pipes, but im still thinking head gasket bad because car runs hot after driving and loses heat and antifreeze. Will the 16oz pour and go work for me?

    • BlueDevil Pro on December 12, 2014 at 2:58 pm

      Tony-

      It sounds like you do have a leaking head gasket based on the fact that you are losing antifreeze. We recommend using the 32 ounce bottle of BlueDevil on your Cadillac as the “Pour N Go” is formulated for 4 or 6 cylinder vehicles and you are working with a V8.

      Feel free to contact us with any questions.

      -BDP

  38. peaches on December 12, 2014 at 10:50 am

    I pour the blue devil head gasket in my van last night so this morning. So my question is can I let the van run in the morning

    • BlueDevil Pro on December 12, 2014 at 2:57 pm

      Yes, it would be safe to run the vehicle the next morning after adding BlueDevil.

      Thanks,

      -BDP

  39. christopher on December 17, 2014 at 10:17 am

    when doing a coolant flush, is it acceptable to just flush using water?

  40. Jodi on December 23, 2014 at 1:14 am

    I have a 99 FOrd Taurus it has an overflow not a radiator cap. How would I administer the application?

    • BlueDevil Pro on December 30, 2014 at 10:58 am

      Jodi-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.

      -BDP

  41. Lee Stafford on December 24, 2014 at 3:45 pm

    How can I tell if I have water in my oil? I am planning to use Blue Devil Pour and Go on my 2003 6 cylinder BMW325i. I am losing coolant and the dealer has diagnosed it as a blown head gasket (or cracked head or cracked block). I just changed the oil 2 days ago and drove the car 180 miles and I now need to add coolant to the system. The oil is the same color and viscosity as when it went in 2 days ago. Is there a way I can be sure no water is mixed in with the oil? Thanks,

    • BlueDevil Pro on December 29, 2014 at 1:31 pm

      Lee-

      The oil will usually look “milky” or have a white substance show up when the dipstick is pulled. You will not always have water in the oil when you have a blown head gasket.

      If it has been diagnosed with a blown head gasket or cracked head then we definitely recommend using the BlueDevil “Pour N Go” to seal the leak.

      Feel free to contact our tech support team at 888-863-0426 with any further questions.

      -BDP

  42. Lee Stafford on December 24, 2014 at 4:48 pm

    One more question re: diagnosing water in oil… The reason I am asking is that you all suggest that the oil is changed prior to using blue devil pour and go if the oil has water in it. This vehicle ( 2003 BMW 325i 6 cylinder) has the thermostat attached to the housing and it is a $50 part. I can easily flush out the cooling system though. To achieve best results would you recommend to use the Blue Devil mechanic approved yellow label with the flushed radiator but with the thermostat in place or use the pour-n-go.

    • BlueDevil Pro on December 30, 2014 at 10:57 am

      Lee-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your capacity, you will be using 16 ounces either way. I would still use a flushing agent to flush your cooling system prior to using the product to ensure proper results.

      Feel free to contact us with any further questions.

      Thanks,

      BDP

  43. Mike F on December 28, 2014 at 5:55 pm

    I bought a 1995 Suzuki Sidekick with a 1.6L engine. It ran like a top the first 2 days I had it, then the cotton the snake I got the truck from push through the heater core and clogged it. So I I bypassed it but I noticed that it had been acting like the head gasket was toasted, but after by passing the heater core and I’m at about 30 minutes in to the 32 Oz Mechanic’s treatment, the truck is idling smooth as velvet and your product seems to be woring like a champ. I’d recommend it to anyone short on. Cash and in a pinch like I am. I have a meeting in a town 200 Mikes away tomorrow and this is my only transportation,will keep you updated on my results. Thanks Blue Devil you guys kick A##!

  44. Chemika Porter on December 30, 2014 at 7:52 pm

    I have a 2005 chevy equnox with smoke coming out of tail pipe and over heating mechanic said blown head gasket which blue devil to get and how do I flush the system

  45. SHANTE MATTHEWS on December 31, 2014 at 3:27 pm

    HELLO I HAVE A 93 TOYOTA CAMRY V6 THAT WAS LOOSING COOLANT AND WHEN WE REMOVED THE OIL CAP IT HAD A MILKY LOOK TO THE CAP ITSELF. I BOUGHT THE BLUE DEVIL BUT I WANT TO MAKE SURE I DO IT CORRECTLY. I KNOW I HAVE TO LET IT RUN FOR 50 MIN BUT WHAT IF THE CAR STARTS TO RUN HOT WHAT DO I DO THEN?

    • BlueDevil Pro on January 7, 2015 at 1:44 pm

      Shante-

      If the vehicle starts to run hot then you will want to shut it down to prevent any damage to the engine. For best results with BlueDevil, the vehicle should be able to idle the full 50 minutes without overheating or stalling out. If it is unable to do so then it may be too far gone for the product to work as it is designed.

      -BDP

  46. Efrain on January 5, 2015 at 9:51 pm

    Which of the two products will work best on a 6 cylinder bmw vehicle presenting no water in oil, no oil in coolant and no smoke on tail pipe. Vehicle 3 and 4 cylinder are leaking combustion into coolant system.

    Regards,
    Efrain

    • BlueDevil Pro on January 6, 2015 at 9:19 am

      Efrain-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your cooling capacity, you will be using 16 ounces either way. I would still use a flushing agent to flush your cooling system prior to using the product to ensure proper results.

      Feel free to contact our tech support team at 888.863.0426 with any further questions.

      -BDP

  47. Francisco on January 7, 2015 at 2:14 am

    Hello

    I have a 1997 Ford F350 7.5L V8 gasoline, with water in oil, looks milky, can I use this stuff? and how much?
    Regards
    Francisco

    • BlueDevil Pro on January 7, 2015 at 1:04 pm

      Francisco-

      Yes, you may use the BlueDevil Head Gasket Sealer to remedy the problem at hand. You will need to add 32 ounces of BlueDevil to your Ford.

      For best results, you will want to change the oil before and after the BlueDevil process.

      -BDP

  48. Brandon Ferguson on January 11, 2015 at 2:28 pm

    I have antifreeze leaking in my oil, and it’s creamy like should I drain everything and pour the blue devil in I have a 2004 grand prix gtp 3800 series3 engine

    • BlueDevil Pro on January 12, 2015 at 1:25 pm

      Brandon-

      Yes, for best results you should change the engine oil before and after the BlueDevil process.

      -BDP

  49. Terry on January 19, 2015 at 8:03 am

    I used the mechanic approved Blue Devil Head Gasket Sealer on my 2001 5.3L V8 Silverado and followed the directions on the bottle, but when I did it, I poured it in through the reservoir/overflow instead of through the top radiator hose. Will it still fix my head gasket?

    Thank you

    • BlueDevil Pro on January 19, 2015 at 9:54 am

      Terry-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, the best way to add BlueDevil is, with the car off and engine cold, disconnecting the top radiator hose and adding the product there. Once it has been added you would reconnect the hose and start the idle from that point.

      However, it has still worked when others have added it through the reservoir.

      Feel free to contact us with any further questions at 888-863-0426.

      Thanks,

      BDP

  50. Randall on January 19, 2015 at 6:48 pm

    Hi I have an 97 cadillac deville that run hot after a few miles but I have no water mixing in oil or anything and I changed my thermostat so will blue devil fix my over problem I’m thinking exhaust steam getting in cooling system

    • BlueDevil Pro on January 20, 2015 at 9:26 am

      Randall-

      You stated that the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. We would recommend using the BlueDevil Head Gasket Sealer.

      To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      All the Best,

      BDP

    • owen zills on February 9, 2015 at 10:11 am

      2003 vw diesel With white smoke from the tail pipe. Have replaced the head gasket and had the head reworked. Still has white smoke. I believe the cylinderhas a pin hole due to use of wrong kind of antifreeze. If a hole is in the cylInder wall…….will the blue devil work??????

      • BlueDevil Pro on February 17, 2015 at 3:59 pm

        Owne-

        Yes, we still recommend using the BlueDevil Head Gasket Sealer in this instance. It should stop your loss of antifreeze.

        Feel free to contact our tech support team at 888-863-0426 with any further questions.

        Thank you!

        -BDP

  51. Mike on January 20, 2015 at 9:22 am

    I used your other repair sealer (not the pour and go) on my 6.5L diesel suburban roughly 3,000 miles ago. It worked great until last night when the head gasket very obviously went out again. I’m ASE certified, so would have no problem replacing the gasket, but don’t have the time. Can I use the pour and go sealer even though I’ve already used your full repair sealer and that failed after a few thousand miles? I want to sell this truck as soon as possible, so am really just looking for a quick fix. Thanks!

    • BlueDevil Pro on January 20, 2015 at 9:29 am

      Mike-

      You could potentially use the BlueDevil Pour-N-Go on your Suburban but you would need to add 2 full bottles due to the larger cooling capacity. However, the Pour-N-Go is a less concentrated formula. We recommend using the “mechanic approved” 32 ounce BlueDevil Head Gasket Sealer again. This would ensure that you get the best results possible.

      -BDP

  52. Antoine on January 20, 2015 at 8:41 pm

    I have a 95 gmc safari and I have gas coming out of the tail pipe, is this a sign of a blown head gasket??

    • BlueDevil Pro on January 21, 2015 at 12:28 pm

      Antoine-

      White smoke would be an indication that you might have a blown head gasket. If you are actually losing gasoline through the tailpipe then I would have your fuel injectors checked.

      Thanks,

      BDP

  53. mandy on January 23, 2015 at 9:24 am

    I have a 05 dodge van and there is oil in the radiator but no coolant in the oil. Someone told me it was a head gasket issue that heads are blown or cracked that blue devil could fix it but a post here that you replied to says blue devil cant fix oil in coolant. My question is if blue devil is suppose to seal the crack where the oil is coming from why wouldnt it stop oil from seaping into the radiator?

    • BlueDevil Pro on January 23, 2015 at 9:34 am

      Mandy-

      Unfortunately, BlueDevil is not intended to stop oil from leaking into the cooling system. It will work if coolant/water is leaking into the oil but not the other way around.

      -BDP

      • mandy on January 23, 2015 at 1:22 pm

        Do you know of anything to stop oil from going into the coolant? Should i still use blue devil for the gasket or should i make sure first that there is a crack. I know your not a mechanic but does my symptoms sound like a gasket problem?

        • BlueDevil Pro on January 23, 2015 at 1:59 pm

          Mandy-

          We do not currently manufacture any products that are intended to help remedy the problem you are dealing with.

          We recommend that you have your mechanic examine the head for cracks. If your head is OK, then you have to assume you have a cracked block, and you’re best bet at that point would be to find a used motor.

          Thank you for your question!

          -BDP

  54. Dee on February 9, 2015 at 3:02 pm

    I purchased blue devil and used it on my 2002 Chevy Venture all wheel drive since the option to replace my head gasket is to expensive but i still see white smoke and my check engine light is still blinking i followed the procedures but it did’nt work what do i do know?

    • BlueDevil Pro on February 18, 2015 at 2:16 pm

      Dee-

      If you have not already, please contact us at 888-863-0426. We would be happy to help you out.

      Thanks!

      -BDP

  55. Daniel on February 11, 2015 at 12:06 am

    Hello I was wondering if your product would work on my 1995 Toyota 4Runner. I’m almost positive that the leak is causing coolant to go into my exhaust system. The engine runs sluggish and produces a lot of white smoke. I was wondering how long the product would last to correct the failed seal and if it would work in my given situation?

    • BlueDevil Pro on February 17, 2015 at 2:07 pm

      Daniel-

      Yes, based on your symptoms we do recommend using the BlueDevil Head Gasket Sealer. There would be no possible harm to your engine in using this product. Once the product creates the seal it is permanent.

      Feel free to contact us at 888-863-0426 with any further questions.

      Thank You!

      -BDP

  56. Mitch on February 12, 2015 at 1:07 pm

    I have 2001 V8 f-150. The bottle I bought says it is good for 4 and 6 cylinder motors. Does that mean I can’t use that bottle on my V8?

    Also when should I change my oil on my truck? Before the blue devil treatment? After? Or before and after?

    Thank you for your time.

    • BlueDevil Pro on February 17, 2015 at 3:55 pm

      Mitch-

      You may still use the BlueDevil Pour N Go but you will need to add 2 bottles for your V8. For best results, your should change the oil before and after the BlueDevil process.

      Thank You!

      -BDP

      • Naveed Riaziat on June 28, 2016 at 1:43 am

        Must I remove the thermostat in my v8 when using 32oz of Blue Devil? In the pour and go instructions it doesnt say it is necessary while in the 32oz it does. Which instructions do I follow? (4.4l V8)

        Thanks

        • BlueDevil Pro on June 28, 2016 at 8:43 am

          Naveed-

          Yes, it is a required step for you to remove the thermostat, while using the BlueDevil Head Gasket Sealer (32oz yellow label). The product has a slightly higher concentrated formula than the BlueDevil Pour-N-Go Head Gasket Sealer, and thus, requires a cooling system flush and removal of the thermostat prior to use. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

  57. ivanG on February 14, 2015 at 1:37 am

    I have the same oil in cooling problem..mechanic said have a “cracked block”,that is the reason i bought a damn pour and go..now to find out it wont work! when i believed it was made to seal cracked blocks..any opinions on why the oil in coolant? Please and thank you

    • BlueDevil Pro on February 16, 2015 at 3:50 pm

      Ivan-

      Unfortunately, we do not manufacture any products that are intended to stop oil from entering the cooling system. If the water/coolant is going into the oil then the BlueDevil Head Gasket Sealer will work. The only solution for the situation you have described would be to tear the engine down and replace the parts.

      Thank you for your question!

      -BDP

  58. Shenierra on February 17, 2015 at 3:12 pm

    I have a Ford Taurus 2002 with blown head gasket. It smokes bad out the muffler. My mechanic said my motor is basically threw. My car won’t stay cranked up should I still use the blue devil????

    • BlueDevil Pro on February 17, 2015 at 3:54 pm

      Shenierra-

      The vehicle should be able to run for a full 50 mintues in order for BlueDevil to have a shot at working properly. If it will not stay cranked then you may need to take it in to your mechanic.

      Thanks!

      -BDP

  59. Erwin on February 17, 2015 at 10:51 pm

    Does blue devil work on rotary motors? (1988 Mazda Rx7 13b n/a to be exact)

    • BlueDevil Pro on February 18, 2015 at 9:10 am

      Erwin-

      Yes, BlueDevil will and has worked in rotary motors with success.

      -BDP

  60. arletha on February 22, 2015 at 7:02 pm

    My husband was doing our car and it turned off 40 minutes into the idling process. He turned it back on and the smoke started back. Why do you think it turned off and do you think we should try it again?

    • BlueDevil Pro on February 23, 2015 at 9:32 am

      Arletha-

      Our guess is that you are getting water/coolant leaking into your engine oil. If enough water gets into the fluid oil system it can eventually cause the vehicle to stall out.

      You could potentially retreat the vehicle but we recommend changing the oil before and after the process to ensure best results. Feel free to contact us at 888-863-0426 with any questions.

      Thanks!

      -BDP

  61. AAB on March 6, 2015 at 8:08 am

    I have a blown head gasket in my 2000 chevy impala and im in the process of getting it fix so should i use this product first before i go throw away money or is it too late to use the product..

    • BlueDevil Pro on March 11, 2015 at 11:14 am

      As long as the vehicle is able to idle for a 50 minute period without stalling out or overheating then you have a good shot at getting the BlueDevil Head Gasket Sealer to work.

      Feel free to contact our tech support team at 888-863-0426 with any questions.

      Thank you!

      -BDP

  62. ernest b on March 6, 2015 at 11:45 pm

    I have a 1985 sedan deville cadillac 4.1 engine. a mechanic told me that my head gasket is leaking because of oil on top of motor and milky oil cap. It isn’t running hot yet. would yo tell me which one of your products do I use to seal these small leaks

  63. travis on March 7, 2015 at 1:18 pm

    OK I have a 97 jetty it was lEakino oil so the mechanic fixed that he also flushed my cooling system with water now the engine is smoking or steaming by the exhaust manifold he doesn’t know what it is from but I think a blown head I have the pour and gò. Should I try it thank you

    • BlueDevil Pro on March 10, 2015 at 2:46 pm

      Travis-

      You may want to have the vehicle further diagnosed prior to adding any products to the cooling system. There are a number of different issues that could be causing the symptom you have described.

      Thank You!

      -BDP

  64. dentresa on March 14, 2015 at 7:37 pm

    I have a 2007 dodge charger w 2.7 v6 motor . . . i got a new thermostat bout 2 weeks ago and did a oil change a week ago and yet the water&oil still mixes ‘ if i add the blue devil will i have to get a new oil change ?

    • BlueDevil Pro on March 16, 2015 at 3:15 pm

      Dentresa-

      Yes, you would need to change the oil before and after the BlueDevil procedure to ensure proper results.

      -BDP

  65. Brandie Haas on March 22, 2015 at 5:59 pm

    Hello Iused your product on my 1994 Cadillac deville it ran the full 50 minutes but I still smell gas and still smokes does this mean the product didn’t work? Should I add more? Please advise thank you.

    • BlueDevil Pro on March 23, 2015 at 10:12 am

      Brandie-

      The smell of gas really isn’t a symptom of a blown head gasket. Please contact our tech support team at 888-863-0426 so that we may get a little more detail about your vehicle and the symptoms it is experiencing.

      -BDP

  66. Brandie Haas on March 23, 2015 at 5:24 pm

    Hello again I tried to call your tech line but it is currently closed I was told by a mechanic that it was a blown head gasket that’s supposedly why I had white smoke withthe gas odor and he told me to buy a head gasket sealer I couldn’t find the one he specified so iI bought blue devil since it seemed to have a lot of good reviews and worked I was really praying this would work but doesn’t appear to I drove it today to work I run it on my breaks and my lunch and is still having same symptoms but we did not use the full 32oz bottle only half Iam wondering if maybe i pour the rest in and let it run if maybe then it will work?

    • BlueDevil Pro on March 24, 2015 at 10:17 am

      Brandie-

      Our tech support line is open Monday – Friday, 8:00 AM – 5:00 PM Eastern Standard Time; you may have just missed us. Please contact us today so that we may walk you through the best steps to take moving forward. We would be happy to assist you in getting the vehicle fixed.

      Thank You!

      -BDP

  67. Munk on March 24, 2015 at 2:58 am

    Hey, I have a 98 mustang v6 & I took it to get a oil change & I was told I had a rear & front seal leak. Will blue devil work? If so, where do I pour it? & the steps to fixing this problem? I need help. Thanks in advance.

    -Munk

    • BlueDevil Pro on March 24, 2015 at 10:00 am

      Munk-

      Yes, BlueDevil will work; we recommend adding 1 bottle of the BlueDevil Oil Stop Leak. You should notice results after about 100 miles of driving.

      Thank You,

      -BDP

  68. John Mcdaniel on March 26, 2015 at 12:12 am

    i have a 1992 cad seville only 84,000 miles with in the past 2 years had radiator , hoses, thermostat , water pump replaced all normal maintenance we were moving to the desert and did all this due to the heat jsy wanted to make sure all worked well , all was fine till we used the heater coolant level dropped and ive been having to add water/coolant ever since not allot half cup here and there i figured there was air in the system and it would sort out . i see no visible leak , some im wondering if its just air stuck some where or head gasket, dont see any white smoke. im at a lost

    • BlueDevil Pro on March 26, 2015 at 2:18 pm

      John-

      If the coolant level is not dropping at all then it is more likely an air bubble in the system. You could always have it looked by a certified mechanic to help diagnose whether or not there is an issue going on.

      Thank You!

      -BDP

  69. steven binnebose on March 31, 2015 at 9:50 pm

    I have a 1996 nissan altima with a blown head gasket will the blue devil pour n go work with my car or should i use the other blue devil product

    • BlueDevil Pro on April 1, 2015 at 10:01 am

      Steven-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your capacity, you will be using 16 ounces either way.

      Thank You!

      -BDP

  70. john on April 12, 2015 at 1:57 pm

    How much pour and go for 8 gal. coolant capacity?

    • BlueDevil Pro on April 13, 2015 at 10:05 am

      John-

      You would need 4 bottles of the BlueDevil Pour N Go for a vehicle with an 8 gallon cooling capacity.

      Thanks!

      -BDP

      • john on April 14, 2015 at 7:12 pm

        I put the 4 bottles in ran for the 50 mins let cool for 3 hours opend the radiator and it looks like it crystalized in the radiator. how can i get the stuff out of my engine

        • BlueDevil Pro on April 15, 2015 at 11:16 am

          John-

          It is very important to use the proper amount of BlueDevil to ensure the intended results.

          Please contact us at 888-863-0426 so that we may discuss the vehicle and the use of BlueDevil.

          Thank You!

          -BDP

  71. Matt Bertrand on April 16, 2015 at 10:18 am

    If I have a 4.1L V8, should I use 2 bottles of your product?

    • BlueDevil Pro on April 16, 2015 at 10:20 am

      Matt-

      You will need a total of 32 ounces of the BlueDevil Head Gasket Sealer to treat your V8.

      Thank You!

      -BDP

  72. william on April 18, 2015 at 8:00 pm

    I have a 1998 Chrysler Sebring Convertible and i do have blown heads I tried to pour Blue Devil into the radiator after removing the cap but air is shooting out .how to pour into the radiator

    • BlueDevil Pro on April 20, 2015 at 11:14 am

      William-

      It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Feel free to contact our tech support at 888-863-0426 with any questions.

      Thanks!

      -BDP

  73. Brent on April 21, 2015 at 12:35 pm

    I have. 2993 ford truck 4.6 v8 it has water in the oil and has gotten hot twice but it just got hot for a few seconds each time! Do u think blue devil will still work?!

    • BlueDevil Pro on April 21, 2015 at 12:55 pm

      Brent-

      Yes, as long as the vehicle will be able to idle a full 50 minutes without stalling out or overheating, we recommend using the BlueDevil Head Gasket Sealer. For best results, you should change the engine oil before and after the BlueDevil process.

      Thank You!

      -BDP

  74. brian on April 25, 2015 at 6:06 pm

    hi, i got a 2000 honda civic coupe with a blown head gasket. i noticed it first because it was overheating and all the coolant i had poured in the radiator was gone. Right away i put some water in to make the heat decrease. next day i noticed also that it struggled to start. i didnt start as quick as it used to, but i didnt pay much attention to it. while i was drive on streets it fully overheated every time i stopped at a red light, and i came back down when i started running. i took it home and my dad poured a bottle of k&w permanent sealer. but i guess we didnt follow the correct steps. before having to pay 1500 for the head gasket repair, i would like to try blue devil on my car to see how it goes. my question is. Can i put blue devil in when i already put the k&w sealer? thanks in advance

    • BlueDevil Pro on April 27, 2015 at 2:29 pm

      Brian-

      You should first completely flush your cooling system prior to adding the BlueDevil Head Gasket Sealer. Please contact our tech support team at 888-863-0426 so that we may discuss your Honda and the best way to use BlueDevil to ensure desired results.

      Thanks!

      -BDP

  75. Daryl on April 30, 2015 at 1:44 pm

    Your product looks like a great “plan A”, and and it seems my car looks like a good candidate, evidently slow coolant leak into the combustion chamber–missing coolant–no drips and no evidence of coolant in the oil, right?
    , My question is if it fails to seal or I have an problem in the future, are there any downsides? Does BlueDevil leave any residue that would make the process of replacing the head gasket any more difficult? Does it permanently and measurably reduce heat transfer in the cooling system?

    • BlueDevil Pro on May 1, 2015 at 1:42 pm

      Daryl-

      You’re right, your vehicle does sound like a great candidate for using the BlueDevil Head Gasket Sealer. The product carries a success rate around 90%.

      If for whatever reason the product is unable to work properly it would not make future repairs any more difficult. The product will not cause any harm or reduce heat transfer within the cooling system.

      Feel free to contact us with any further questions.

      Thank You!

      -BDP

  76. carl on May 1, 2015 at 8:21 pm

    I have 98 Deville running fine as long I stay off the highway when I get on the highway it starts to get hot 220 250 then overheats after 25 miles or so if I use blue devil all I have to do is pour in the product and idle for 50 minutes with cap on or off and do I need to drain coolant first or just pour it in cold thank u

    • BlueDevil Pro on May 5, 2015 at 11:42 am

      Carl-

      You may use either Head Gasket Sealer. The “Pour N Go” (16 oz./white label) is a less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. Whereas the “Mechanic Approved” (32 oz./yellow label) requires both the removal of thermostat and a flush before applying the product; the 32 ounce is the more concentrated formula.

      The product with the yellow label will give you best overall results as long as you can remove the thermostat and flush the system prior to use. With the use of either product, be sure to follow the guidelines for the proper amount to use. Based on your coolant capacity, you will be using 32 ounces with either product. The radiator cap should be on during the 50 minute idle.

      Feel free to contact us at 888-863-0426 with any further questions.

      Thanks!

      -BDP

  77. Lisa on May 13, 2015 at 12:03 pm

    I have a 2002 Honda Civic LX with over 241,000 miles on it. I started having some cooling problems last year and had my radiator and thermostat replaced. However, my car kept on overheating from time to time – usually if I was idling in heavy traffic on a hot day. It hadn’t happened again last month while driving on the interstate for about 2 hours. My last episode happened three days ago. I was driving and my car just started to slow down and cut off on me. I was able to coast to a safe spot and let it cool down. In about 30 minutes, I was able to start it again and drive home. Once I got home, I let it cool off for a few hours and then checked the coolant fluid and oil levels. The radiator was full and there was coolant in the reservoir and the oil level was fine. Just yesterday, during my regular oil change appointment, I had my coolant system flushed and had them do a compression test on the coolant system to see if there were any leaks. Thank goodness, none were found. The mechanic wanted to check to see if a head gasket was blown but I just didn’t have the money to have to test done yesterday. After reading some of the other comments, I’m thinking that this might be my problem but I haven’t seen any white smoke coming from my car or anything mixed with my oil. If I can find someone to check the head gasket at a minimal fee, do you think it would be worth it using your product or just paying the money to get it fixed by a mechanic? I’m willing to pay up to $1000 to get it fixed since I never had any other major problems with my car in the 13 years that I have had it. I just can’t afford to make car payments at this time. Any recommendations?

    • BlueDevil Pro on May 26, 2015 at 5:52 pm

      Lisa,

      As you were describing the problem with your Civic it is a good possibility that you have a blown head gasket. Even a small leak can cause the problems you’re having without the other symptoms of white smoke or bubbles in the radiator. Some auto parts stores sell a kit to chemically test for a head gasket leak that is inexpensive so it might be worth calling a few in your area and asking.

      BlueDevil Head Gasket Sealer is a great alternative to having a costly head gasket replacement. Since your car has such a small engine and at this point a small leak, you could use BlueDevil Pour-N-Go (available here: http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/). BlueDevil Pour-N-Go is something you can install yourself in just a few minutes using the directions in the link above. It is guaranteed to seal your head gasket leak!

      If you have any other questions please let us know!
      -BlueDevil Pro

      • Lisa on June 10, 2015 at 2:12 pm

        So if I use this product and I don’t have a leak, it won’t hurt anything else?

        • BlueDevil Pro on June 11, 2015 at 10:24 am

          Lisa-

          The BlueDevil Head Gasket Sealer should not be used as a preventative maintenance.

          Thanks!

          -BDP

  78. Kenneth Heller on May 19, 2015 at 5:21 pm

    Have 1997 toyota tacoma 4 cyl engine. After it runs about 20/30 minutes starts pumping water outof overflow I have traced it to a leaking head gasket. Is blue devl a fix for this

    • BlueDevil Pro on May 20, 2015 at 10:26 am

      Kenneth-

      Based on your symptoms we recommend using the BlueDevil Head Gasket Sealer.

      It sounds like your Toyota may be getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Feel free to contact us at 888-863-0426 with any further questions.

      Thank You!

      -BDP

  79. louis rivera on May 23, 2015 at 3:03 pm

    Before I pour the blue devil into my radiator. Does my radiator need to be drained completely?

    • BlueDevil Pro on May 26, 2015 at 11:08 am

      Louis-

      Yes, you should flush the cooling system and refill it with water prior to applying the BlueDevil Head Gasket Sealer.

      -BDP

  80. pay on May 26, 2015 at 5:22 pm

    I have a 98 grand marquis v8 and I went to start my car today and it sound like something broke. I know I have a blown head gasket and my heater doesn’t work, what should I do. And I have a bottle of blue devil

    • BlueDevil Pro on May 28, 2015 at 2:22 pm

      Please contact our tech support team at 888-863-0426 (8:00 AM – 5:00 PM Eastern Standard Time) so that we may discuss your vehicle in more detail and be able to better determine if it is a good candidate for using the BlueDevil Head Gasket Sealer.

      Thank You!

      -BDP

  81. Patrick on May 30, 2015 at 2:51 pm

    I was wondering if it is safe to use Blue Devil in my Motorcycle. It is a 1985 KZ454 LTD. So far I am finding oil in the water, but no water in the oil…..so far.

    • BlueDevil Pro on June 1, 2015 at 10:19 am

      Patrick-

      Unfortunately, we do not manufacture any products that are intended to stop oil from going into the coolant. Our BlueDevil Head Gasket Sealer will work when water/coolant is entering the oil but not the other way around.

      Thank You!

      -BDP

  82. PETER SANCHEZ on May 30, 2015 at 6:11 pm

    I have a 94 Chevy Camaro with 146,000 miles coolent goes from full to empty in 5 min after warming up after shut down I can hear it boiling after cooling down and opening its dry no coolent in oil no oil in coolent no smoke from exhaust but overheats severely there’s no coolent leaks except when it overflows from overflow reservoir a friend who is a mechanic said most likely blown head gasket minor but don’t push it fix it ASAP….is this situation fixable with blue devil?

    • BlueDevil Pro on June 11, 2015 at 1:19 am

      Peter,

      Thanks for your question about your Camaro. The symptoms you are describing do all sound like a blown head gasket. With your car having a larger cooling system and a leak of this size we could recommend using BlueDevil Head Gasket Sealer (available here: http://store.gobdp.com/head-gasket-sealer-38386/?page_context=search&faceted_search=0). All of our products carry a money back guarantee if you purchase them online or from one of our partnering auto parts stores.

  83. Quincy on June 1, 2015 at 9:59 pm

    So I have been doing my research all day while I was at work today, and decided that once I got off, I would try a bottle of the “Pour and Go”. My 2002 Jeep Liberty 3.7L was smoking like a chimney and the oil looked like chocolate milk, I knew I was screwed! Well I picked it up at AutoZone, flushed my coolant and changed my oil first, then followed the steps on the bottle. So far, the smoke is gone! No rough idle anymore, no check engine light, and I took it on the highway runs like a champ at 70-80 MPH. I’ll update if I have any changes.

  84. Jeff on June 18, 2015 at 9:38 pm

    I have a 1986 s10. I used the BlueDevil product. After pouring it in and completing the idling process, I let the engine cool off for a bout an hour or so. When I went to top off the radiator with antifreeze as recommended, some anti freeze and possibly some of the BlueDevil product shot out of the radiator. Should I used another bottle of BlueDevil or should I wait a while more and just add the antifreeze?

    • BlueDevil Pro on June 19, 2015 at 1:35 pm

      Jeff-

      You do not need to add more BlueDevil at this point. The BlueDevil Head Gasket Sealer creates a permanent seal during the 50 minute idle. Once the idle is complete and the vehicle has cooled down it will not make any difference whether BlueDevil is left in or not.

      Thank You!

      -BDP

  85. Stefan on June 23, 2015 at 8:04 pm

    I am just wow’d! Here’s why…

    I only put in 1/3 of the can (I thought there’d be enough room for all of it because prior to I was having to add 1 quart of coolant every 3-4 days), but I guess I didn’t plan it out right (or maybe the engine was still a bit too warm), anyway, after adding 1/3 of the can I popped the cap on, let the engine run about 50 minutes, and I HAVEN’T HAD ANY OVERHEATING ISSUES SINCE! (Also, it’s nice to have the A/C working again.)

    Thank you Blue Devil, you saved me $1900.00!!!!

    ~S. Knight (Salt Lake City, Utah)

  86. John Hagen on July 18, 2015 at 4:06 pm

    16 oz. blue devil head gasket sealer.On the bottle under instructions it says turn the temp max. and then it says let it idle 50 mins on the normal operating temp. what it means when it says normal operating temp? do we need to put temp from max to cold? normal? or what? or it means let the temp stay on max and idle 50 mins? Thanks.

    • BlueDevil Pro on July 20, 2015 at 10:19 am

      John-

      By “normal operating temp” we are meaning that it does not overheat. You are right that the engine temperature should be a little lower with the heater on high. However, we still recommend running the heater on high. The product only requires the engine to reach about 150 degrees Fahrenheit in order to gain the benefit.

      Thank You!

      -BDP

  87. Lonell on July 21, 2015 at 2:11 pm

    I have a 1990 Dodge Ramcharger spitting out the white smoke. The private party who sold me the vehicle told me it was the head gasket. Should I give this a whirl or have someone look it over and tell me exactly what I need? I know they will charge me a couple hundred just to look at the darn thing.

    • BlueDevil Pro on July 22, 2015 at 3:15 pm

      Lonell-

      Based on your description it is possible that you have a blown head gasket. If you have noticed that the vehicle has been losing some coolant/water over a period of time then we definitely recommend using the BlueDevil Head Gasket Sealer.

      Feel free to contact our tech support team at 888-863-0426 with any further questions.

      Thank You!

      -BDP

  88. John on July 22, 2015 at 8:10 pm

    I just rerplaced Hed, Intake and Plenum Gaskets(intake/Plenum twice). With the Oil Drain plug removed, as I put water in it runs out of the oil drain. Will the Bluedevil work? and for how long?

  89. John on July 22, 2015 at 8:14 pm

    Sorry. Just got cleaned up and frustrated!

    I just replaced Head/Intake/Plenum gaskets(Intake/Plenum twice). With the Oil Drain plug removed, as I put water in it runs out of the oil drain. Will the Bluedevil work? and for how long?

    • BlueDevil Pro on August 3, 2015 at 12:21 pm

      John-

      It sounds like the vehicle may be losing water too quickly for BlueDevil to be able to work properly. In general, you really shouldn’t be losing more than about 1 quart of water/coolant during an hour run for BlueDevil to have a good shot at working.

      Feel free to contact us at 888-863-0426 (Monday – Friday, 8:00 AM – 5:00 PM EST) with any questions.

      Thank You!

      -BDP

  90. Donna on July 27, 2015 at 9:19 am

    I am about to replace my thermostat for the 4th time. It currently has a failsafe thermostat and after about 4 days from replacement it begins to overheat only during slow down or idle position. No moisture from tail pipe or smoke of any kind. No leaks of any kind. Could it be a blown head gasket and if it isn’t would it hurt if I used it any way just in case?

    • BlueDevil Pro on July 27, 2015 at 2:53 pm

      Donna-

      It does not sound like a blown head gasket based on your description. You may want to have the system bled down in case of any air bubbles stuck within the cooling system.

      It wouldn’t be a bad idea to have a certified mechanic take a look at the vehicle and come up with a diagnosis. Once a diagnosis is made you will be able to tackle the problem.

      Thanks!

      -BDP

  91. charity on August 4, 2015 at 12:16 am

    i have a 2001 dodge neon..i replaced the head gasket a couple years ago and the thermostat as well. my car runs decent and has power but seems to get warmer than it should and if i drive it for a period of time and then kill the engine, u can hear the water bubbling in the overflow. do u think this product would work for me? if so which should i use? thanks in advance..any suggestions are welcome

    • Ryan Osborn on August 4, 2015 at 12:24 pm

      Charity-

      Please contact our technical support line at 888-863-0426, so that we can better understand the vehicle’s symptoms and give you our recommendation.

      Thank you!

      -BDP

  92. JR on August 5, 2015 at 12:51 pm

    I have a 2006 Hyundai . My car over heated and took it in to shop he fixed the radiator and gave it a oil change. Now my car is running rough. could it be the head gasket? Just a girl trying to figure out whats wrong with my car.

    • BlueDevil Pro on August 11, 2015 at 9:13 am

      JR-

      Please contact our technical support line at 888-863-0426, so that we can better understand the extent of the repairs on your Hyundai and make a recommendation based on your provided information.

      Thank you!

      -BDP

  93. Sava on August 9, 2015 at 4:43 pm

    Hi Blu Devil guys, I have a question for you.

    I have Toyota Avensis 2.0 diesel engine, and it’s diagnosed with exhaust/combustion gases in cooler with chemical tester that changed color from blue to green, since the bubbles are really small and barely visible. I don’t lose a lot of water while driving in town, only when i step on a gas and increase engine workload I start loosing water from reservoir/overflow. When in standby I don’t loose water, and the engine doesn’t overheat, also coolant and oil doesn’t mix since I changed oil and coolant and found no traces of mixing so I can conclude that it’s not big opening in the gasket. I don’t know if it’s the gasket or the head or engine block since opening the engine is also expensive.

    With all this symptoms could I use blue devil, and if yes, how should I apply it since I don’t know on which cylinder is the problem (haven’t tested the compression on cylinders), or I shouldn’t worry since I’m not loosing water when car is working idle and go with the manual?

    Thank you

    • BlueDevil Pro on August 11, 2015 at 3:40 pm

      Sava-

      We do recommend using the BlueDevil Head Gasket Sealer to help repair your Focus.

      Based on your description, it sounds like your vehicle may be getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with a low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will sometimes notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Feel free to contact our tech support team at 888-863-0426 (Mon – Fri, 8:00 AM – 5:00 PM EST) with any questions.

      Thanks!

      -BDP

  94. Brandon mckinney on August 18, 2015 at 4:02 pm

    Hey I have a 5.0 v8 305 in my 1986 chevy k10. I ordered a 32 ounce bottle of easy pour gasket sealer. Is there any prep work i need to do or do I just pour it in my radiator with my coolant and let it run? And how much sealer should I pour in.

    • BlueDevil Pro on August 19, 2015 at 8:35 am

      Brandon-

      You will use the full 32oz bottle in your V8 Chevy K10. In terms of prep work, you would remove your thermostat and perform a cooling system flush using BlueDevil Radiator Flush (or comparable flushing agent) prior to adding the product. Feel free to contact our technical support line at 888-863-0426 if you have any other questions.

      Thank you!

      -BDP

  95. Gary on August 22, 2015 at 7:18 pm

    I just used B.D. pour n go now since I used it and been here doing the idle step it emitting blue exhuast smoke is this normal??

    • BlueDevil Pro on August 24, 2015 at 10:38 am

      Gary-

      When you are seeing blue smoke it is an indication that you are burning oil. The BlueDevil Pour N Go does not burn bluish in color, it would look the same as antifreeze (thick white smoke) if it were leaking and burning off through the exhaust.

      Thank You!

      -BDP

  96. Erin on August 27, 2015 at 8:45 am

    My 06 jeep commander is misfiring and has a small head gasket leak into cylinder four. There is no overheating, no white smoke, and we barely lose any coolant. The leak appears to seal after the engine warms up. Would the pour and go be the right option to use?

    • BlueDevil Pro on September 10, 2015 at 9:51 am

      Erin-

      Yes, the BlueDevil Pour N Go Head Gasket Sealer would be a great solution for stopping the small leak in your Jeep. You should have no problem sealing it with BlueDevil as it sounds like you are catching it very early.

      Thank You!

      -BDP

  97. Derek on September 3, 2015 at 11:24 pm

    I have a ford ranger with a head gasket problem, I have been adding water as it runs low, so there is little to no antifreeze left in the coolant system it is almost pure water.

    Should I drain and fill with50/50 mix prior to using your product or just add it to the water?

    • BlueDevil Pro on September 4, 2015 at 11:53 am

      Derek-

      You would be fine to add the product to the water already in your system.

      Thank you!

      -BDP

      • Derek on September 6, 2015 at 12:45 am

        Thank You,Thank You, Thank You, Thank You….

        I can’t say it enough, I just got back from a test drive after the repair procedure.

        I noticed about 5-10 minute into the idle process, that the rough idle went away, and although I was hopeful when I started, the smooth idle got me really excited.

        After the 50 min idle I decided to order pizza with the money I saved on a full head gasket rebuild, and drove the car down to the pizza place to get it, and the entire time the temp guage didn’t budge, even with me intentionally keeping the revs higher than normal!

        I don’t pretend to know how you guys came up with a chemical alternative to a mechanical rebuild, but I am eternally grateful that you did!

  98. Michael on September 14, 2015 at 4:20 pm

    I have a Toyota rav4 with a blown head gasket or cracked head causing oil to get in the cooling system i understand how your product works am I right in thinking this will not work in my case?

    • BlueDevil Pro on September 15, 2015 at 4:05 pm

      Michael-

      You are correct, the BlueDevil Head Gasket Sealer is intended for coolant leaks only. Unfortunately, we do not manufacture a product intended to stop oil leaks from the head gasket.

      Thank you!

      -BDP

  99. Michael on September 25, 2015 at 7:37 pm

    I put blue devil in my 96 cadillac deville and it’s overheating will it’s idling. What should I do?

    • BlueDevil Pro on September 28, 2015 at 12:30 pm

      Michael-

      If it overheats prior to the 50 minute idle then that is usually an indication that your vehicle may be a little bit too far gone for BlueDevil to work properly.

      Thank you!

      -BDP

  100. Michael on September 25, 2015 at 7:42 pm

    My water is mixing with my oil causing a white substance on my oil cap. Will it seal the leak to stop that also?

    • BlueDevil Pro on September 28, 2015 at 12:33 pm

      Michael-

      We recommend using the proper amount of the BlueDevil Head Gasket Sealer as it will work to stop water from leaking into the engine oil. For best results, you should change the engine oil before and after the BlueDevil process.

      Thank you!

      -BDP

  101. jimmy on September 26, 2015 at 4:55 pm

    i tried blue devil pour and go today , made sure i went through all of the instructions , 98 malibu didnt run hot the whole hour i left it running ,after that i let it cool for about an hour and a half began running hot 2 minutes after i left home

    • BlueDevil Pro on October 1, 2015 at 6:51 pm

      Jimmy,

      Thanks for your question about your Malibu. Your car may have overheated simply because it had been idling for so long so you may try parking your car, letting it cool completely, then driving again to see if you overheat. This also could be an indication that your thermostat is bad, as they can often be damaged when your car overheats so it may be worth putting a new thermostat in as well.

      Thanks again for your question!
      -BD Auto Pro

  102. Derek on September 26, 2015 at 9:57 pm

    my sister’s van is not only billowing smoke, but as I fill the coolant I can watch it pour from the exhaust (mainly the condensation hole on the muffler) and i am at a loss to find a way to get water to stay in the system and therefore get your product to stay in the system. Any suggestions, or is the car too far gone?

    Also it is not getting heat inside van so may not even be getting through the heater core.

    I do know the leak is in cyl 2 and she desperately need this fixed if possible.

    • BlueDevil Pro on October 1, 2015 at 6:54 pm

      Derek,

      Sorry to hear about your sister’s van. Based on your description it sounds like your leak may be too large for BlueDevil Head Gasket Sealer to fix. In your case, we would recommend having the head gasket, or possibly even the motor replaced.

      Thanks again for your question!
      -BD Auto Pro

  103. Elise on September 29, 2015 at 9:31 pm

    I nee some help.
    I am a rookie at the car world, which is what caused my problems problem. I have a 2002 Subaru Impreza. As you can imagine I have an head gasket leak. I got me some Blue Devil and poored it into my coolent resivore 4 days ago. I realized that the blue devil probably didnt make it into my system because the resivore doesnt normally feed back into the system- I think. I pulled open the resivore and some… glumpy blue white stuff- that wasnt really sollidish was plooping around the bottom. I assume this was the blue devil, not in the right spot. I cleaned out the devil, but now I dont know what to do.
    Can I stick a new bottle into the actual radiator system? Do I need to wait and see?
    Help please.

    • BlueDevil Pro on September 30, 2015 at 11:54 am

      Elise-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point.
      Based on what you have done thus far, it would be a good idea to flush the cooling system out first, so that there is nothing in the system that would be potentially clogging or restricting of flow.

      Thank you!

      -BDP

  104. james on October 14, 2015 at 5:37 pm

    If I have a bad intake and my car got coolant in the spark plug hole and exhaust pressure built up in my overflow tank plus my car jerks and want accelerate over 10 MPH would your product help this??

    • BlueDevil Pro on October 16, 2015 at 9:37 am

      James-

      Yes, we would recommend using the BlueDevil Head Gasket Sealer in this situation. Based on your description, it sounds like your vehicle may be getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with a low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will sometimes notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Thank you!

      -BDP

  105. Scott on October 23, 2015 at 8:39 am

    I’ve seen videos online where there is a buildup of BD around cooling channels of the cylinder walls. Would a chemical flush/backflush after the treatment be a good idea or would that potentially diminish the effects of the treatment?

    • BlueDevil Pro on October 31, 2015 at 11:40 am

      Scott,

      Thanks for your question about BlueDevil products. BlueDevil sealers are safe to stay in the cooling system of your vehicle after the leak is sealed and will not diminish the cooling capacity of your system so a flush is not necessary. BlueDevil forms a chemical weld at the leak point, so once the leak is sealed you could flush your cooling system without affecting the integrity of the seal, but again, is not necessary.

      Thanks for your question!
      -BD Auto Pro

  106. Alan on October 25, 2015 at 12:18 am

    I have a 2005 Nissan Altima 3.5 V6, head gasket blew out on my wife and she drove 30mins on the interstate before safely exiting…the oil on the dipstick is light milky brown, the car will no longer crank up, still spins/fires with a little back kick, but won’t crank (did compression test by filling radiator with water and attempt to crank and the water shoots back out of the radiator) . What can I try to do to get the vehicle to crank so I can use Blue Devil?

    • BlueDevil Pro on October 31, 2015 at 12:07 pm

      Alan,

      Thanks for your question about your Nissan Altima. The last thing you can try is removing the spark plug in the blown cylinder and seeing if that will relieve the pressure in that cylinder and the cooling system enough to allow it to run. If that doesn’t work, then unfortunately your leak is too big for BlueDevil to fix and you will need to replace the head gaskets.

      Thanks again for your question!
      -BD Auto Pro

  107. José H. on October 26, 2015 at 11:42 pm

    I have a 2003 dodge neon that has the 2 front freeze plugs leaking. I’m about to use the Blue Devil product. . My question is what does exactly means when u guys said idle for 50 mins?
    Does that includes driving the car too?

    • BlueDevil Pro on October 27, 2015 at 3:48 pm

      Jose-

      Idle means the vehicle is run while sitting still; not being driven. You will simply turn the engine on and allow it to run while sitting still.

      Feel free to contact our tech support team at 888-863-0426 with any questions regarding the use of BlueDevil.

      Thank you!

      -BDP

  108. Mr Moore on February 17, 2016 at 12:08 pm

    I dont kno cars My car is smoking and I put antifreeze in its just bubbles and I think it drains out but see no leak and my oil dip stick has milky substance on it 1984 grand prix will product work

    • BlueDevil Pro on February 19, 2016 at 8:55 am

      Mr. Moore-

      Thank you for asking about your Grand Prix. Based on your description, it sounds like you are experiencing a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer, found here http://store.gobdp.com/head-gasket-sealer-38386/ . As long as you are not losing water/coolant too quickly and the vehicle will idle for a full 50 minutes, without overheating or stalling out, you would be a good candidate for the product. You will want to change your oil before and after the BlueDevil process. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  109. Roger Sanders on February 21, 2016 at 6:56 pm

    We have a 1985 Case tractor , started leaking a little water into the oil , can we try this BD on this diesel tractor

    • BlueDevil Pro on February 22, 2016 at 12:56 pm

      Roger-

      Thank you for asking about your Case Tractor. Yes, the BlueDevil Head Gasket Sealer is compatible and can be used in diesel engines. As long as you are not losing water/coolant too quickly and the tractor will idle for a full 50 minutes, without overheating or stalling out, you should be able to see some good results from the product.

      Thank you!

      -BDP

  110. Thomas on March 30, 2016 at 11:50 pm

    I have a 03 Cadillac cts. recently I started the car to find oil mixed in the radiator. I’m in the process of flushing it out. An thinking of buying your product. do I add the blue devil with coolant or water?

    • BlueDevil Pro on March 31, 2016 at 9:22 am

      Thomas-

      Thank you for asking about your Cadillac cts. The BlueDevil Head Gasket Sealer is intended for water/coolant leaks only. Unfortunately, we do no manufacture a product intended to stop oil getting into the radiator. A hard part repair may be your best option.

      Thank you!

      -BDP

  111. Roger Monarch on April 27, 2016 at 7:50 pm

    2011 Subaru outback. What product for bubbling out reservoir. Car keeps burping. Wont overheat ideling only while driving

    • BlueDevil Pro on April 28, 2016 at 8:45 am

      Roger-

      We recommend using BlueDevil Head Gasket Sealer for your Subaru. It sounds like the vehicle may be getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system; you will only need 8 – 10 ounces in your Subaru.

      Thank you!

      -BDP

  112. asking on April 30, 2016 at 9:22 pm

    ok 96 chevy has water in the oil so is mine to far gone to use this on it because if it runs for 50 min with oil in the water

    • BlueDevil Pro on May 2, 2016 at 11:21 am

      Asking-

      As long as you are not losing water/coolant too quickly, you would be a good candidate for the product. Based on your description, we recommend changing your oil before and after the BlueDevil process. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  113. Michael on May 12, 2016 at 5:03 pm

    Hey I have a 115 hp 4cyl outboard motor that is getting water into the bottom two cylinders if I put the lower unit into a tank of water will it help my problem and if so what would be the amount of Blue Devil to water ratio should I use.
    Thank you for any help you can give me.

    • BlueDevil Pro on May 18, 2016 at 1:11 pm

      Michael-

      You would be using about 16 oz of the BlueDevil Head Gasket Sealer for your 4 cylinder outboard motor. As long as you are not losing water/coolant too quickly, and the engine will idle for a full 50 minutes, without overheating or stalling out, then you would be a good candidate for the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  114. William Howes on May 18, 2016 at 2:54 am

    Used the Pour and Go on our 2003 PT cruiser. 1st problem, blown electric fan, 2nd, stuck thermostat, after all that over heating apparently the head gasket went. Liquid coming out of the tail pipe. Loss of coolant. Car sounded like a coffee pot. Ongoing overheating problem for months.
    Found Pour and go on a web search. Used as directed, everything is running cool and fine. No loss of fluid, no coffee pot.
    I’ve been in the automotive industry since the early 70’s, and have never found an additive that actually worked for a head gasket problem. This does, don’t let the price put you off, it is definitely well worth it! Average cost of a head gasket replace, 2,000 US! Average cost of a bottle of pour and go, 34.99. You do the math.

    • BlueDevil Pro on May 18, 2016 at 8:30 am

      William-

      Thank you for the great feedback! We are pleased to hear of the success you’ve had with the product. Once the product seals, it is a permanent seal, so you should be good to go at this point!

      Thank you!

      -BDP

  115. Rick on May 28, 2016 at 12:03 pm

    What if you had to turn your car off after 30 mins because it was overheating?

    • BlueDevil Pro on May 31, 2016 at 2:26 pm

      Rick-

      Typically if the engine has to be shut off prior to the complete 50 minute idle it is an indication that the blown head gasket is too extreme for what BlueDevil is intended to fix. This usually means the vehicle will require a hard part repair.

      Thank you!

      -BDP

  116. denesse on May 29, 2016 at 7:32 pm

    Hi, does the coolant need to be drained after using the pour and go? i am not mechanically inclined, and im hoping to not have to take it to a mechanic. The oil change guy said i had a gasket leak! thanks you so much

    • BlueDevil Pro on May 31, 2016 at 2:25 pm

      Denesse-

      You do not need to drain the coolant after the use of BlueDevil Pour N Go Head Gasket Sealer; it can remain in the system.

      Thank you!

      -BDP

  117. Morgan on June 24, 2016 at 6:33 pm

    I have a very slow leak somewhere from the cooling system, not any of the hoses or radiator (I pressure tested it), but I am unsure if it is the head gasket (no oil in the coolant and no milkiness in the oil) or if it might actually be leaking somewhere else in the engine. Will this product still work if the leak is elsewhere in the cooling system?

    • BlueDevil Pro on June 27, 2016 at 12:02 pm

      Morgan-

      Thank you for your question. The BlueDevil Head Gasket Sealer would treat leaks for blown head gaskets, warped/cracked heads, leaking heater cores, leaking freeze plugs, leaking radiators and blocks. If you are unsure where the leak is coming from, you may want to have the vehicle properly diagnosed by a certified ASE mechanic to give yourself a better idea of how to treat it. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  118. Michael Richmond on July 20, 2016 at 2:28 pm

    WHat if water is in my oil would your product still work

  119. Alberto on August 4, 2016 at 4:11 pm

    There is no coolant in my oil, I’m not loosing coolant but I notice pressure in my radiator will blue devil work on my vehicle. I notice the temperature goes up when I’m driving in the freeway.

    • BlueDevil Pro on August 8, 2016 at 3:26 pm

      Alberto-

      It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  120. Monika on August 9, 2016 at 10:13 pm

    Hi, I have Cadillac Deville with Northstar 8 cylinder engine. I start overheating after 2-3 miles. My mechanic told me that head gasket blown. I am thinking of using yellow blue devil head gasket sealer. Will it work in Cadillac Deville 8 cylinder engine? How do I add it to engine? Please explain whole procedure?

    • BlueDevil Pro on August 10, 2016 at 9:13 am

      Monika-

      Yes, the BlueDevil Head Gasket Sealer is compatible with your Cadillac Deville. If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there. Once it has been added reconnect the hose and start the idle from that point. The directions are listed in the following link, http://store.gobdp.com/head-gasket-sealer-directions/ . Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  121. Nick on August 11, 2016 at 2:15 pm

    The description is pretty self explanatory, but do you need to flush the radiator first before doing this? Asking around I’ve heard different things.

  122. Matt on August 24, 2016 at 7:16 pm

    Do i need to install a new thermostat after using blue devil or can i just install the old one afterwards ?

    • BlueDevil Pro on August 25, 2016 at 10:28 am

      Matt-

      You may install the old thermostat as long as it is still functioning properly.

      Thank you!

      -BDP

  123. Jose A. Tuero on September 11, 2016 at 10:32 am

    I have a 2002 Hyundai Accent with a 1.5L and for a few months coming, I noticed that the overflow reservoir was always overfilled and had to put more water in the radiator. I noticed one day that with the radiator cap off I let the engine reach operating temperature and noticed that the water inside the radiator was bubbling. It got worst when I accelerated the engine the air bubbles got worst. Just this past weekend I after I have just about replaced everything inside the engine compartment for the exception of the entire engine, I removed the valve cover and found the oil to be milky in texture. I will assume that, that is water mixed with the oil.
    My question if I used Blue Devil in my 2002 Accent should I remove the milky oil with filter and replace with new oil and filter? I what to get rid of the car it has 106,000 miles on it and I need something newer and better.
    I just want this car to last a few months until I get a new one. I already had to replace the head gasket before the timing belt broke and it bent an exhaust valve on the #4 cylinder. I really do not want to go through a full teardown again if I can avoid it. You folk think your product will work, I will take the chance and buy it.
    Thank you

    • BlueDevil Pro on September 12, 2016 at 10:56 am

      Jose-

      Thank you for asking about your Hyundai Accent. It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure.  We would recommend using the BlueDevil Head Gasket Sealer.  To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading.  Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.
      If you have water/coolant getting into the oil, we recommend changing the oil before and after the BlueDevil process. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  124. Charles McMillin on September 17, 2016 at 3:18 pm

    I have a 2000 chevy venture with blown head gasket. If I use the pour and go sealant should I still flush and put water in. If so, how long before I can replace the water with coolant?

    Thans

    • BlueDevil Pro on September 22, 2016 at 10:47 am

      Charles-

      You may still flush the system prior to adding BlueDevil Pour N Go Head Gasket Sealer. If you use just plain water then after the 50 minute idle you should shut the engine off and allow it to cool for at least 2 hours; once the engine has cooled you may drain the system to add your factory recommended antifreeze.

      Thank you!

      -BDP

  125. Tina on September 19, 2016 at 10:07 am

    I have a 99 oldsmobile alero. .using this product do we need to remove the thermostate or block and line before use? Os just simply follow instructions on the bottle? Thanks for your time!!

    • BlueDevil Pro on September 19, 2016 at 11:29 am

      Tina-

      If you are using BlueDevil Pour N Go Head Gasket Sealer (http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/) then you do not have to remove the thermostat prior to installing it. As long as you follow the directions on the bottle you should have no problem sealing the leak you are experiencing.

      Feel free to contact our tech support team at 888-863-0426 with any further questions.

      Thank you!

      -BDP

  126. Steven on October 12, 2016 at 7:34 pm

    Just saved $4,800 thanks to Blue Devil. Blew a head gasket on my 2000 Jag XKR, used the Blue Devil 32 ounce sealant, followed instructions to the letter, after idling for 50 min I let engine cool down then took out for a spin. There was little smoke coming out of pipes and after about 25 miles of driving none at all. More importantly car did not heat up. I’ve since put on 100 miles of freeway/city driving with no heat ups and no lost fluid. Product is amazing!!! A $5000 repair job cost me $200 after changing out plugs and oil which I recommend, Thank you Blue Devil!!!! Amazing Results

    • BlueDevil Pro on October 13, 2016 at 9:13 am

      Steven-

      We are glad to hear of the success you have had with the BlueDevil Head Gasket Sealer! Once the product seals, it would be a permanent seal, so you should be good to go at this point.

      Thank you!

      -BDP

  127. Josh on October 31, 2016 at 1:29 am

    I bought a 2000 bmw with water in the oil and it was blowing coolant and smoke out of the muffler. Used this stuff and it worked great. Just followed the instructions and changed the spark plugs and it’s good to go, been driving every day with no problems.

    • BlueDevil Pro on November 1, 2016 at 10:43 am

      Josh-

      We appreciate your feedback! It is great to hear of the success you have had with the product. Once the product seals, it would be a permanent seal, so you should be good to go at this point.

      Thank you!

      -BDP

  128. Jeff on November 21, 2016 at 4:24 am

    I have here a 2005 Chrysler Town and Country with a 6 cylinder engine. I’ve replaced the radiator (crack at top hose output), water pump (leaking out weep hole) about 1 month ago. I thought my problems was solved, but I am still loosing coolant (about half a gallon per 6 miles). I’ve also replaced the thermostat, thermostat housing, top radiator hose, radiator cap,
    I’ve done a block test for combustion and came back clean. Did an oil change last week and looked fine. No water coming from the tailpipe. I’ve done a compression test on the radiator at 15 psi for an hour at 2000 rpm’s and it held steady the hole time.
    Nevertheless I must be losing it while driving because I have been putting 4×4 sheets of cardboard under the van every time I park it and have never seen it leak. My last hunch is the heater core. Although I never smell any clakeoolant and it does not appear to be leaking inside or out. Perhaps it’s steaming out somewhere and not actually leaking.

    At this point, I have ordered the BlueDevil Head Gasket Sealer #38386 32oz (yellow label) and the BlueDevil Flush.
    I have read just about every comment on the thread so I already know when using this one I have to pull the thermostat and flush the system fist. Since I have a normal radiator, I will be pouring it down there.

    My question is, how much of the 32 ounce containing will I need to use for my vehicle. My vehicle has a coolant capacity of 13.36 qt. (12.64L).

    Best Regards,
    Jeff

    • BlueDevil Pro on November 22, 2016 at 9:18 am

      Jeff-

      Thank you for asking about your Chrysler Town and Country. You will be using about 16 oz. of the product for your vehicle, so about half of the 32 oz. bottle. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  129. Danny on November 28, 2016 at 2:11 pm

    I did not pull the thermostat and I had to pour the sealer in the pressure tank, as I don’t have a radiator cap. will it be ok

    • BlueDevil Pro on November 29, 2016 at 9:02 am

      Danny-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there (it may be added into the hose or through the opening).  Once it has been added reconnect the hose and start the idle from that point. Please contact our technical support line at 888-863-0426 so that we can get a better understanding of your vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  130. Cameron Terry on December 13, 2016 at 10:56 am

    Do I need to completely drain the cooling system before adding the blue devil or do i just pour it in with the old coolant and then drain it afterwards?

    • BlueDevil Pro on December 13, 2016 at 11:18 am

      Cameron-

      For best results, we recommend flushing your cooling system prior to adding BlueDevil Head Gasket Sealer and then adding it to either water or fresh antifreeze.

      Thank you!

      -BDP

      • Cameron Terry on December 13, 2016 at 11:29 am

        So, i flush it before adding it and leave it empty, add the sealer, and then after that process is complete add the fresh antifreeze/water?

        • BlueDevil Pro on December 13, 2016 at 1:42 pm

          Cameron-

          After flushing the system, you would fill with water, leaving enough room for the recommended amount of the product. After the process is complete, you may drain the system and refill it with your regular 50/50 mix. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

  131. andrew hawk on December 22, 2016 at 8:12 pm

    I used blue devil head gasket sealer last month (the one with engine flush/remove thermostat/drain everything procedure) It seemed to work, but maybe not completely. The truck has a misfire again, and I’m suspecting head gasket leak still.

    can I put the “pour and go” formula inside radiator even though I still have residual original blue devil inside the cooling system?

    • BlueDevil Pro on January 4, 2017 at 8:49 am

      Andrew-

      The product only reacts to heat once (one heat cycle). Any extra BlueDevil in the system would be like extra water at this point. It will not continue to react or continue to seal, so you would be fine in adding the BlueDevil Pour-N-Go Head Gasket Sealer. Please contact our technical support line at 888-863-0426 so we may assist you in obtaining a replacement bottle.

      Thank you!

      -BDP

  132. Lou on December 30, 2016 at 6:25 pm

    We have a Mazda RX-8 with coolant seeping past the coolant seals at one of the rotor housing seals. Can your head gasket sealer be used in a rotary engine to fix this type of issue? Thanks.

    • BlueDevil Pro on January 5, 2017 at 9:55 am

      Lou-

      Thank you for asking about your Mazda RX-8. Yes, the BlueDevil Head Gasket Sealer is safe and compatible to use in rotary engines. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  133. Gustavo E. Laffitte on January 9, 2017 at 3:00 pm

    I bought a 95′ Chevy S10 about 2 weeks ago with 65k miles on it. Ran great for the first few days before it started to occasionally & then more occasionally idle rough & have a rough go thru 1st gear. It was quickly diagnosed by a mechanic as a blown head gasket due to rough idling & also an external leak which I can see is coming from where the headers meet the block. What I initially thought was a very dirty radiator when I bought the truck turned out to be radiator stop leak brown powder, I purchased your Blue Devil pour and go but wanted to do a radiator flush first and was concerned that the chemical flush could possibly remove stop leak from any leaks it’s currently preventing in the radiator, does your product seal back up any leaks a flush might do in the radiator?… Is this a valid concern?… Thanks

    • BlueDevil Pro on January 12, 2017 at 11:52 am

      Gustavo-

      Thank you for asking about your Chevy S10. Once the product seals, it would be a permanent seal. Flushing the cooling system would not deteriorate the seal the product already created.

      It is possible that you are getting combustion/exhaust gases pumping back into the cooling system.  You can use a “Block Dye Tester” to confirm whether or not that is the case. BlueDevil Head Gasket Sealer will still work if your vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure.  To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading.  If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull.  Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.  Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  134. TJ on February 1, 2017 at 1:30 am

    I have a full size chevy truck with the extra capacity radiator. The bottle of pour and go says for 4 and 6 cylinder engines do I need two bottles for my v8 chevy? Also if I need two bottles but I did one already can I follow the same steps for the 2nd bottle at a later date?

    • BlueDevil Pro on February 1, 2017 at 9:17 am

      TJ-

      You are correct, the BlueDevil Pour-N-Go Head Gasket Sealer is intended for use in 4 or 6 cylinder engines. Do you happen to know the cooling system capacity of your Chevy? You would need the proper amount of product at one time to properly treat your vehicle. Unfortunately, the 16 oz. you added to the system would not have had much of an effect, being that the system is larger than that of a 4 or 6 cylinder engine cooling system. Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and cooling system capacity and be able to make any appropriate recommendations.

      Thank you!

      -BDP

    • Stephen Crosby on July 9, 2017 at 11:02 am

      I recently added the Pour and Go to my V-8 Dodge Ram and it completely worked, even though it was only one bottle. Granted it was only for a few weeks, but I suspect a different hole somewhere else has opened up now. I’m going to get the concentrated bottle this time.

      • BlueDevil Pro on July 10, 2017 at 9:40 am

        Stephen-

        Please keep us posted on your results.

        Thank you!

        -BDP

  135. Jake on February 26, 2017 at 4:22 pm

    In my 97′ BMW 318is I found coolant in my oil. Is it too late to try to use your head gasket repair?

    • BlueDevil Pro on February 27, 2017 at 10:06 am

      Jake-

      Thank you for asking about your BMW 318is. As long as you are not losing water/coolant too quickly, you would be a great candidate for the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/). We recommend changing the oil before and after the BlueDevil process. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  136. Mike on April 12, 2017 at 7:21 am

    so, with the pour-n-go product do i need to empty out my radiator first before adding the sealant? Do i pour it into the radiator or the coolant reservoir?

    • BlueDevil Pro on April 12, 2017 at 9:06 am

      Mike-

      You would only need to empty it enough to ensure you have enough room for the recommended amount of the product. The product needs to be poured through the radiator cap or directly into the radiator, not through a coolant reservoir/overflow tank.

      Thank you!

      -BDP

  137. mike on April 12, 2017 at 10:25 am

    i poured the blue devil put n go in my radiator. now I’m letting it idle. should i shut it off after the 50 minutes or drive it ?

    • BlueDevil Pro on April 12, 2017 at 10:58 am

      Mike-

      After the 50 minute idle, you should shut the vehicle off and allow it to cool before topping the system off with your 50/50 mix. After you top the system off, you may take it for a test drive to better test the results that you got. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  138. tom d on May 2, 2017 at 1:42 pm

    Thermostat in, or is it ok if was taken out and use the product, 07 equinox..?

    • BlueDevil Pro on May 2, 2017 at 4:04 pm

      Tom-

      It is best if the thermostat is removed when you run BlueDevil Head Gasket Sealer through the cooling system. This will help create a free-flowing system.

      Thank you!

      -BDP

      • BlueDevil Pro on May 11, 2017 at 9:33 am

        Tom-

        Please contact us at 888-863-0426 so that we may discuss the vehicle with you.

        Thank you!

        -BDP

        • Beatrice on March 6, 2018 at 4:07 pm

          I have a 2006 chevy equinox and overheating and white smoke coming out of the tailpipe. Do I need to remove thermostate, drain radiator and change oil prior to using blue devil?

          • BlueDevil Pro on March 7, 2018 at 9:32 am

            Beatrice-

            Thank you for asking about your Chevy Equinox. Based on your description, we recommend using the BlueDevil Head Gasket Sealer (https://store.gobdp.com/head-gasket-sealer-38386/). Yes, you would be removing the thermostat and flushing the cooling system prior to use. Also, if you are getting water/coolant into the oil, we recommend changing the oil before and after the BlueDevil procedure. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



  139. remi on May 13, 2017 at 12:04 pm

    Hello Blue Devil Team,
    My Nissan Xterra 2006 is overheating. We have removed thermostat, water pump is ok, engine direct attach fan is ok, coolant quality and level is ok, engine oil is not looking milky. The only thing I haven’t done is to confirm if head gasket is still ok; unfortunately I don’t have the tools to do engine compression test. My guess is that the overheating has affected my head gasket. Can I go ahead and apply Blue Devil under this condition; please advise?

    • BlueDevil Pro on May 15, 2017 at 9:50 am

      Remi-

      Thank you for asking about your Nissan Xterra. It is possible that you are getting combustion/exhaust gases pumping back into the cooling system.  You can use a “Block Dye Tester” to confirm whether or not that is the case.
      BlueDevil Head Gasket Sealer will still work if your vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure.  To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading.  If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull.  Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.  Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  140. mike on June 21, 2017 at 3:51 pm

    So I have a 2001 Cherokee Sport with a 4.0. I was having overheating problems I replaced the thermostat and water pump, when looking at the old water pump I was sure this was the problem. But I am still having over heating issues and water loss. I can see water coming from the tail pipe, it is also running rough…and my check engine light is blinking occasionally indicating misfires. Do you think Blue Devil will work for me and which do recommend for my problem? also I currently have a clogged heater core :/

    • BlueDevil Pro on June 22, 2017 at 10:30 am

      Mike-

      Thank you for asking about your Jeep Cherokee Sport. Based on your description, we recommend using the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/). It is possible that you are getting combustion/exhaust gases pumping back into the cooling system. You can use a “Block Dye Tester” to confirm whether or not that is the case. This would explain the misfires and the poor circulation of coolant, causing poor heating.
      BlueDevil Head Gasket Sealer will still work if your vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  141. Cheus on June 23, 2017 at 10:52 pm

    Can I use blue devil if I have straight water in my system

    • BlueDevil Pro on June 26, 2017 at 9:41 am

      Cheus-

      Yes, BlueDevil Head Gasket Sealer may be added to straight water in the system.

      Thank you!

      -BDP

  142. Stephen Crosby on July 9, 2017 at 9:24 am

    I have an ’02 Dodge Ram 1500 with the 4.7L engine and it was missing when first started and blowing white smoke that I could smell was clearly antifreeze. I recently used the Blue Devil concentrated formula, but added it to the reservoir instead of the top radiator hose. The white smoke and smell have stopped but it still misses and stumbles when first started. Can I try to treat it again, or is this a one-try process only? Also, if I drive around with it still in the system for awhile before I drain it and refill with antifreeze, will I do damage, or do I need to do that right away?

    • BlueDevil Pro on July 10, 2017 at 10:21 am

      Stephen-

      Thank you for asking about your Dodge Ram 1500. Based on your description, we would recommend a second application of the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/), adding the product through the radiator hose this time. The product only reacts to heat once. After the 50 minute idle and you shut the vehicle off, the product would not continue to react or continue to seal, so it is safe to leave it in the system.
      Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  143. Bradley on July 10, 2017 at 5:05 pm

    I took my 4runner to the shop and they told me it has a blown head gasket because air is going into the radiator there is no smoke but the car does not pass emissions will the Pour n Go help with passing smog emissions? will it seal the air coming into to the radiator ?

    • BlueDevil Pro on July 11, 2017 at 8:38 am

      Bradley-

      Thank you for asking about your Toyota 4Runner. It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly.

      Thank you!

      -BDP

  144. Josh on July 19, 2017 at 3:46 am

    What does it mean if I have white smoke when revving at an idle along with a sputtering sound as it winds down? no milky oil, and no loss of coolant. Smoke smelled of something burning.it was white. no smoke when driving and no over heating even at high speeds. will your product help or could this be something else?

    • BlueDevil Pro on July 19, 2017 at 10:08 am

      Josh-

      If you are seeing white smoke, it sounds like you have water/coolant burning off somewhere and creating that smoke. Is the smoke coming from under the hood or from the exhaust pipe? Based on your description, if you are not noticing a loss of water/coolant, it would not be appropriate to use the BlueDevil Head Gasket Sealer. We recommend taking the vehicle to a certified ASE mechanic for a proper diagnosis. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  145. Penda on August 26, 2017 at 5:09 pm

    082517 – 2002 4Runner V6 – in order to give Blue Devil the best chance to stay put (and not be affected by coolant)… since it is still summer, can we just leave the Thermostat out, and run truck with water as coolant for a few weeks ?

    • BlueDevil Pro on August 28, 2017 at 10:04 am

      Penda-

      Thank you for asking about your Toyota 4Runner. The BlueDevil Head Gasket Sealer only reacts to heat once (one heat cycle), so you would not be getting any additional benefit or doing any harm by leaving the product in the system. You would be fine to leave the thermostat out for a few weeks.

      Thank you!

      -BDP

  146. Jasmine Jelsema on August 29, 2017 at 3:35 am

    Will the percentage of effectiveness lower if there is “milky oil” or possibly water in the oil. I have read that I must replace the oil before and after the head gasket sealer procedure. Will the product still be covered by the warranty?
    Thank you!

    • BlueDevil Pro on August 29, 2017 at 9:01 am

      Jasmine-

      Water getting into the engine oil is exactly what the BlueDevil Head Gasket Sealer is intended for. As long as you are not losing water too quickly, you would be a great candidate for the product. You are correct, we recommend changing the oil before and after the BlueDevil process. The warranty on the product would still be covered as long as you are using it appropriately and as directed.

      Thank you!

      -BDP

  147. lanier on September 3, 2017 at 11:55 pm

    In the event of combustion gases entering cooling system, is it safe to “depressurize” that cylinder by removing spark plug? Is it safe to idle for 50 mins with a spark plug missing?

    • BlueDevil Pro on September 5, 2017 at 9:58 am

      Lanier-

      Yes, it is safe to idle the vehicle for 50 minutes with the spark plug removed from the affected cylinder, to reduce the amount of pressure that is building up, and allowing for better overall circulation. It will be kind of loud and idle a little roughly but, it would not cause any harm to the engine.

      Thank you!

      -BDP

  148. Robert H. on September 25, 2017 at 10:54 pm

    My 1999 Ford Taurus (V6 Engine) misfired Sunday (shaking, and a flashing service engine light was what brought me to that conclusion; after looking up the issue online); I had a friend of mine who is a mechanic look at it and he noticed a warped head. Will BlueDevil be a good option since I do not have the money for a major repair? Also, since I know absolutely nothing about cars; should I have a mechanic do the treatment if I choose this option?
    Thank you.

    • BlueDevil Pro on September 26, 2017 at 9:40 am

      Robert-

      Thank you for asking about your Ford Taurus. Based on your description, we recommend using the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/). It does sound like you may want to let a mechanic do this process for you, as the removal of the thermostat and a cooling system flush are two required steps before adding the product.

      Thank you!

      -BDP

      • Robert Houser on September 26, 2017 at 11:04 pm

        How long does the seal last before it needs to be done again?

        • BlueDevil Pro on September 27, 2017 at 8:44 am

          Robert-

          Once the product seals, it would be a permanent seal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

  149. HEMANT S on October 3, 2017 at 10:27 am

    Hi Team,

    I have Nissan Altima 2.5L, 2002 Model, Issue was that my car was giving White smoke occasionally with Vibration other than that My car runs very smooth with good mileage. I been told that Head Gasket is gone. After I tried Blue devil HEAD GASKET SEALER #38386 all went fine. and then I drain out the Blue devil and add the coolant. I drove almost 30 mile to office and park the car, latter in the evening I try to start it but it won’t. then i called the mechanic and find out that the there was some oil in the spark plug. After cleaning it, car started. But now it is park in my garage and not starting again I think its a same problem of having oil in spark plug.

    Do let me know if I missed any step or How can resolve this problem or I have to do the process again.

    thanks
    HS

    • BlueDevil Pro on October 3, 2017 at 12:41 pm

      Hemant-

      Thank you for asking about your Nissan Altima. The BlueDevil Head Gasket Sealer is only intended for water/coolant leaks, so it would not be able to stop oil leaking from the head gasket. Is it oil that is getting on the spark plug or water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  150. Bear Towns on October 30, 2017 at 2:04 pm

    Will this work on a 2000 Saturn LS1 with the 2.2 4cylinder

    • BlueDevil Pro on October 30, 2017 at 2:58 pm

      Bear-

      Yes, the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/) is safe and compatible to use on your Saturn LS1. Be sure to follow the cooling system capacity table on the back of the bottle to ensure the proper amount of product is used.

      Thank you!

      -BDP

  151. J on November 14, 2017 at 4:26 pm

    I have a 2006 VW Bug with a potential heat core pinhole leak. I have a maple syrup smell and oily film on my windscreen inside. Would this product be a suitable and compatible fix for this? I know a hard part change would be best but it’s not a possibility.

    • BlueDevil Pro on November 15, 2017 at 9:21 am

      J-

      Thank you for asking about your VW Bug. Based on your description, you would be a good candidate for the BlueDevil Head Gasket Sealer. The product is safe and compatible for use in Volkswagens. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  152. Shawn on January 6, 2018 at 1:01 pm

    I have a 2001 Dodge Ram 3500 with a 5.9L cummins how much of the pour n go should I use since the cooling system is so large or should I use the yellow label?

    • BlueDevil Pro on January 8, 2018 at 9:45 am

      Shawn-

      Based on your cooling capacity, we recommend applying 3 bottles of BlueDevil Pour N Go Head Gasket Sealer for proper treatment.

      Feel free to contact our tech support team at 888-863-0426 with any further questions.

      Thank you!

      -BDP

  153. Christopher on January 11, 2018 at 5:46 pm

    What if the car won’t start, because of the compression issue is there anything I can do. Just need to get it to the dealership

    • BlueDevil Pro on January 12, 2018 at 9:31 am

      Christopher-

      In terms of using the BlueDevil Head Gasket Sealer, the vehicle would need to be able to idle for a full 50 minutes. Unfortunately, if the vehicle is unable to start, a hard part repair may be your best option. You can try checking your spark plugs and replacing any that have become deteriorated or fouled out. That may allow the vehicle to turn over, but if a great amount of water/coolant is getting into the cylinders, replacing the spark plugs would probably only be a very temporary solution.

      Thank you!

      -BDP

  154. Caitlin on March 2, 2018 at 5:44 pm

    I have a 2002 Mini Cooper S, it has a supercharger. I have a head gasket leak and intermittent overheating problems. Can I use the pour and go? Can I use it with the 50/50 mix coolant?

  155. ISAIAS RODRIGUEZ on March 15, 2018 at 5:29 pm

    I just put the BlueDevil head gasket sealer through the radiator upper hose and let the car run on idle for the 50mts as per instructions. My car wasn’t really overheating, I just was tired of hearing the bubbles noise in the cooling system as well as the reservoir tank. I took the car out [ 2008 suszuki forenza] for a test and after only 2 miles of driving the car engine overheated to a point of seeing the vapor coming out through the hood. The temperature went up to the maximum heating point and I went back home before it could be any worst. I let it cool down and put distilled water on the reservoir tank instead of coolant and took it to another test but still overheating. What would you recomend.

    • BlueDevil Pro on March 16, 2018 at 9:07 am

      Isaias-

      Thank you for asking about your Suzuki Forenza. Did you bleed the cooling system after the product was applied? Were you noticing a loss of water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  156. Brandon sebastian on April 14, 2018 at 5:11 pm

    I just used this and If been running my truck for about 30 min and it’s starting to over heat what do i do let it keep running or shut it off?

    • BlueDevil Pro on April 16, 2018 at 8:43 am

      Brandon-

      If the vehicle was going to overheat, you would want to shut it off. Please contact our technical support line at 888-863-0426 so that we may assist you with the warranty on the product.

      Thank you!

      -BDP

  157. Alexx on July 19, 2018 at 11:32 am

    I have an old Toyota Cressida with 7MGTE engine. The thing is, earlier this month my cooling system is making this bubble noises and spewing out coolant out of the reservoir tank after a very spirited driving and is very noticeable when idling waiting for my turbo timer to cut off (after cut off, at this point lots of coolant is spewing out from the reservoir tank and i have to top up the coolant everytime im using the car). During that spirited driving the temperature did raise higher than usual but never reach the overheating point. (Double checked the oil, non of that milky stuff present)
    I suspect a hairline crack headgasket and planning to use your yellow label 36oz head gasket sealer.

    My question is, do I pour the whole bottle? My coolant capacity is around 8litre.
    After removing thermostat and thorough flushing, Should I:
    -Add water+ BlueDevil+water(completely fill and bleed the coolant) or
    -Add water+BlueDevil(slightly fill with possible air pocket)?

    And after the 50min process, should I just leave the mixed fluid, or drain the whole thing and fill up with a proper coolant?

    • BlueDevil Pro on July 19, 2018 at 2:04 pm

      Alexx-

      Thank you for asking about your Toyota Cressida. For an 8 liter system, you would want to use about 10-12 ounces of the product. Based on your description, you would want to bleed the system first, prior to adding the product.
      It is possible that you are getting combustion/exhaust gases pumping back into the cooling system. You can use a “Block Dye Tester” to confirm whether or not that is the case.
      BlueDevil Head Gasket Sealer will still work if your vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. When finished, drain the system completely and refill with your regular 50/50 mix to get rid of any excess air.

      Thank you!

      -BDP

  158. Ben Cripe on July 30, 2018 at 12:47 pm

    What are the differences and recommended uses for the Pour-and-Go Head Gasket Sealer vs. the head Gasket Sealer? It seems there may be some oil in the coolant on a 1997 Oldsmobile 88 we have. I’m unsure as to which product to use. Thank you.

    • BlueDevil Pro on July 31, 2018 at 8:58 am

      Ben-

      Thank you for asking about your Oldsmobile 88. Unfortunately, neither of the head gasket sealers we manufacture would stop oil from getting into the coolant. Both head gasket sealers and our Radiator & Block Sealer are only intended for water/coolant leaks. A hard part repair may be your best option.

      Thank you!

      -BDP

  159. Mike on October 24, 2018 at 4:17 pm

    I put the blue devil thru my top radiator hose & reconnected & started engine for 50min idle. Can I drive after?? So I need to let cool & flush?

    • BlueDevil Pro on October 25, 2018 at 8:34 am

      Mike-

      After the 50 minute idle, we recommend letting the vehicle cool off before topping the system off or draining and refilling with your compatible antifreeze. After the vehicle cools back down and the system is at the proper level, you would be fine to take it for a test drive.

      Thank you!

      -BDP

  160. Jim on December 6, 2018 at 3:36 am

    Would it be okay to do a double treatment on a car? Would doing a double treatment cause any damage to the engine? Did the first treatment with BD Gasket Sealer and even though it did help a bit it didn’t completely get rid of the issue. So would the engine benefit from a 2nd treatment with Gasket Sealer Pour And Go instead of BD Gasket Sealer and be effective and a good option?

    • BlueDevil Pro on December 6, 2018 at 8:49 am

      Jim-

      Yes, it is possible to do a second treatment of the BlueDevil Head Gasket Sealer. Typically, you should only need to use the product once. However, in a situation where the leak may be a little larger than what the product is intended for, and it partially seals, a second application would be worth while. Feel free to contact our technical support line at 888-863-0426 if you run into any other questions.

      Thank you!

      -BDP

  161. Spencer on December 11, 2018 at 11:07 pm

    Looking to use this on a 97 4runner 3.4l, blowing white smoke I think it’s burning coolant. I’d like to try this product but I’m worried I may cause further damage. Will Blue Devil work?

    • BlueDevil Pro on December 12, 2018 at 9:34 am

      Spencer-

      The BlueDevil Head Gasket Sealer would be safe and compatible to use on your Toyota 4Runner. As long as you are using the product appropriately and as intended, it would not cause any further issues. The product does not contain any solid or particulate matter, so it is a non-clogging product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  162. Eric Nadeau on December 30, 2018 at 1:46 pm

    Does blue devil work better with 100% water or 50/50 water and coolant mix?

    • BlueDevil Pro on January 2, 2019 at 9:00 am

      Eric-

      As long as the cooling system is clean or chemically flushed, it would not matter either way. Whether you just use water or a 50/50 water and coolant mixture, the product would work the same.

      Thank you!

      -BDP

  163. Stuart on April 29, 2019 at 2:28 pm

    Can you pour the Blue Devil head gasket sealer into the coolant reservoir?

    • BlueDevil Pro on April 29, 2019 at 4:20 pm

      Stuart-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there; do not pour it into the reservoir. It may be added into the hose or the opening on the radiator. Once BlueDevil has been added, reconnect the hose and start the idle from that point.

      Thank you!

      -BDP

  164. sanders auto glass on June 6, 2019 at 9:04 am

    Good article & excellent way to articulate. Keep it up.

  165. Oskar on July 10, 2019 at 10:37 am

    When I use blue devil head gasket sealer in my vehicle when I flush the cooling system do I replace it with just water no coolant?

    • BlueDevil Pro on July 10, 2019 at 11:07 am

      Oskar-

      That is correct. As per the directions, after flushing the cooling system, you will fill the system up with water, leaving enough room for the recommended amount of the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  166. Rickyraf on July 19, 2019 at 5:37 am

    I have a Nissan pathfinder 2006. The thermostat is 1 piece assembly. If i remove it i will not be able to seal the engine housing or reconnect the pipes. What should i do? Keep it when idling and then replacing it? It will be affected by the blue liquid?

    • BlueDevil Pro on July 19, 2019 at 9:00 am

      Rickyraf-

      Thank you for asking about your Nissan Pathfinder. The best way to get around the thermostat housing is by taking the thermostat and modifying it so that the middle piece does not close; you may remove this piece or gut the middle of the thermostat. By doing so you will create a free flow and still be able to have the full housing installed. The thermostat should remain “open” while BlueDevil circulates through the system. Once the BlueDevil procedure is complete you will need to replace the thermostat. The other option would be to use BlueDevil Pour N Go Head Gasket Sealer which is an easy-to-use formula that does not require thermostat removal.

      Thank you!

      -BDP

  167. Rickyraf on July 21, 2019 at 7:20 am

    Thanks for the reply. What if i turn on the heater during the 50 minutes. This will keep the thermostat open? For nissan pathfinder 2006 how much quatity i should use? Complete bottle or half or 3/4 ?

    • BlueDevil Pro on July 22, 2019 at 11:01 am

      Rickyraf-

      Putting the heater on, blower to the max, will help draw heat from the engine to help it from overheating during the 50 minute run. You would use about 16 oz. of the product for your Nissan Pathfinder.

      Thank you!

      -BDP

  168. JJ on July 27, 2019 at 1:06 pm

    Can i used this in an older engine say a 403 oldsmobile small block?

    • BlueDevil Pro on July 29, 2019 at 9:59 am

      JJ-

      As long as you are using the product appropriately and as intended, it would be safe to use in older engines. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  169. Virginia on October 8, 2019 at 2:00 pm

    I have a Hilux toyota 2010
    It has multilayer steel cylinder head gaskets. Can you continue working without problems?

    • BD Auto Pro on October 9, 2019 at 9:22 am

      Virginia,

      Thanks for your question about your 2010 Toyota Hilux. Multilayer steel head gaskets are the most robust head gaskets you can get for your vehicle so if that is what your truck has installed then it is very unlikely to get a blown head gasket. In our experience, if you’ve got a head gasket leak with an MLS head gasket, the problem is more often a warped or cracked head than a problem with the head gasket.

      Thanks again for your question!
      -BD Auto Pro

  170. Curtis Massey on November 14, 2019 at 10:24 pm

    I have 2002 Chevy Monte carlo with a bad starter and a small cracked engine block from what I was told the
    crack is forcing my starter to go bad and not start, Im getting my starter rebuilt will I then be able to use the sealer or
    will I need to do something else to get it to start, because some times It start and some times it dont but my battery only work
    when I have jumper cables attached other than that it seems like the battery needs to be charged and starter needs to be rebuilt and then maybe the sealer ?

    • BlueDevil Pro on November 15, 2019 at 9:25 am

      Curtis-

      Thank you for asking about your Chevy Monte Carlo. Based on your description, we would recommend repairing the starter issue first, before using the BlueDevil Head Gasket Sealer. In order to get the benefit of using the product, the vehicle would need to be able to start and idle for a full 50 minutes, without overheating or stalling out.

      Thank you!

      -BDP

  171. Dennis on January 11, 2020 at 4:26 pm

    Used the Blue Devil YELLOW LABEL in my Dodge Truck. However I DID NOT remove the thermostat and now the heater does not work. Do you think the thermostat has plugged up and hot water is not getting to the heater core? The engine is not overheating but I have not run it a lot. What would you recommend at this point?

    • BlueDevil Pro on January 13, 2020 at 9:14 am

      Dennis-

      The reason for the direction of removing the thermostat isn’t because of the possibility of it clogging. It is to ensure the system is free-flowing. You can check the thermostat to see if it’s clogged and also check to see if it’s functioning properly by placing it in boiling water and seeing if it opens up at the proper temperature. What are the symptoms your Dodge was having? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  172. Brian on February 13, 2020 at 12:21 pm

    So, as for the 50 minute idol, I need to use this on a Prius. As you may know, the Prius only idols for a few minute at a time and I don’t think there is a way to keep it at a steady idol for 50 minutes. Suggestions?

    • BlueDevil Pro on February 13, 2020 at 1:19 pm

      Brian-

      There is actually a procedure to put the vehicle in what’s called “Maintenance Mode.” This will allow your Prius to idle consistently without shutting off, until you turn off the ignition. You may want to look up the instructions for this procedure online.

      Hope this helps!

      -BDP

      • Brian on February 16, 2020 at 11:24 am

        Sweet! I had no idea that existed and this is my second Prius with 200,000 miles on them. Thanks for your help.

  173. Richard on March 10, 2020 at 8:14 am

    I have a slight leak on my 2001 SLK320 which leaks coolant to the motor only after driving for an hour. Do I idle it for an hour with the product in it get it to work? It takes a long time for this car to get to the operating temp of around 189F. And how many bottles should I use for this engine?

    • BlueDevil Pro on March 10, 2020 at 10:21 am

      Richard-

      Thank you for asking about your Mercedes Benz SLK320. Based on your description, we would recommend using the BlueDevil Head Gasket Sealer. As per the directions, once the product is added, you will idle the vehicle for 50 minutes. The product reacts at a temperature around 150 degrees. You would want to change your oil before and after the procedure. You would need 16 oz. of the product for your 6 cylinder engine. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  174. Malea Aragon on June 11, 2020 at 1:20 pm

    Is it bad to leave the sealant in for longer then 50 minutes and possibly drive it around for a couple days, short trips?

    • BlueDevil Pro on June 12, 2020 at 9:46 am

      Malea-

      The BlueDevil Head Gasket Sealer only reacts to heat once (one heat cycle). After the 50 minute idle and you shut the vehicle off, the product will not continue to react or continue to seal. It is safe to leave in the system, however, you are not getting any additional benefit by doing so. Once complete, you would be fine to drain the system and refill with your regular 50/50 mix.

      Thank you!

      -BDP

  175. David Frazee on June 29, 2020 at 5:41 pm

    So I am getting ready to use your Yellow Label on my 2007 6.0 powestroke. The issue is I only have a surge tank so do I add it with the engine off through the radiator, or running through the surge?

    • BlueDevil Pro on June 30, 2020 at 8:58 am

      David-

      If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there; do not pour it into the reservoir. It may be added into the hose or the opening on the radiator. Once BlueDevil has been added, reconnect the hose and start the idle from that point.

      Thank you!

      -BDP

  176. Navtej on October 29, 2020 at 9:34 pm

    Hi i have 2008 jeep liberty i did coolant flush New thermostat its still overheating then i remove the thermostat temperature guage start stay in middle But my jeep have sign blown head gasket i watch some video then i use blue devil head gasket sealer 473ml bottle pour-n-go i put throw radiator cap while its was idle runnig Fan on with full temperature goes to more than half my coolant system was flush already now i going to install thermostat white smoke disappear will it temp guague to stay in middle thanks

    • BlueDevil Pro on October 30, 2020 at 8:36 am

      Navtej-

      Feel free to contact our technical support line at 888-863-0426 with any questions.

      Thank you!

      -BDP

  177. Debra Sanders on July 19, 2021 at 3:47 pm

    I own a Chrysler 200 2012 model. Which hose do I disconnect to put your product in I cannot get to my radiator I only have the Overflow. I have a blown gasket.

    • BlueDevil Pro on July 19, 2021 at 3:59 pm

      Debra-

      Thank you for asking about your Chrysler 200. If your vehicle only has a reservoir/overflow rather than a radiator cap, instead of pouring BlueDevil through the reservoir/overflow, with the car off and engine cold you should disconnect the top radiator hose and add the product there; do not pour it into the reservoir. It may be added into the hose or the opening on the radiator. The speed of the pour will not matter. Once BlueDevil has been added, reconnect the hose and start the idle from that point.

      Thank you!

      -BDP

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