BlueDevil Head Gasket Sealer

#driveyourlife

NCB_38386BlueDevil Head Gasket Sealer (#38386) will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs. BlueDevil contains no solid or particulate matter, and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, and it’s safe and easy to use. BlueDevil is compatible in gasoline and diesel engines. It stops leaks permanently. Our article on the symptoms of  a blown head gasket is a good starting place to correctly identify your gasket issues.

  • Permanent repair for Head Gaskets, Warped or Cracked Heads, Heater Cores, and Freeze Plugs
  • Contains no solid or particulate matter that can harm a vehicles engine
  • Alternative solution for costly and time consuming repairs
  • Safe and easy to use

 

 

For More Information, Please Visit: BlueDevil Products: Head Gasket Sealer

 


BlueDevil Head Gasket Sealer

456 responses to "BlueDevil Head Gasket Sealer"

456 Comments

  1. ernie kaler on April 28, 2013 at 12:14 am

    why does the 16 oz bottle not say” to remove thermastate” , and the 32 oz bottle does? doesent make since to me. product works great! must say the money back guarentee made the differance to try it. cant waste money on a fixed income. also it means you stand buy your product. hard to find real quality anything these days.I will always recomend this product.this is my first time to comment on any product.its that good.im sure your products will go far.

    • BlueDevil Pro on April 29, 2013 at 12:31 pm

      Thank you so much for your comments!

      In regards to the Head Gasket Sealer, you may use either product. 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. The “Pour N Go” was specifically formulated so that it was an “easy to use” product and through testing we were able to develop a formula that didn’t require the removal of the thermostat but still carries a high success rate. 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 (32 ounce) will give you best overall results as long as you can remove the thermostat and flush the system prior to use.

      Feel free to contact us with any questions.

      • Russ Jennings on January 10, 2014 at 10:25 pm

        I have a 2005 Toyota 4Runner V6 and the thermostat is built into the housing and the hose connection, the thermostat cannot be removed. Can I still use the yellow label product? I have already purchased it. Thanks

        • BlueDevil Pro on January 13, 2014 at 3:07 pm

          The way you can get around the housing is by taking a old thermostat and modifying it so that the middle piece does not close; you may remove, 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 process is complete you will need to replace the thermostat.

          Feel free to contact us with any further questions.

          • rosalina McClelland on June 7, 2018 at 4:16 pm

            I have a 2007 vw rabbit food I just put it in the coolent?



          • BlueDevil Pro on June 8, 2018 at 8:36 am

            Rosalina-

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

            Thank you!

            -BDP



          • Wyan Joseph on February 19, 2021 at 10:44 am

            Hi I have a 2010 Audi A4 Quattro. I have a oil leak ,a head gasket leak , and have oil in spark plug cylinder 3. I don’t know which of the blue devils to get honestly. Can I use more then one? I was going to use the oil leak, and the head gasket leak sealer pour And go one together . But I don’t know if thats a good idea. And is this product good for luxury cars?.



          • BlueDevil Pro on February 19, 2021 at 3:18 pm

            Wyan-

            Thank you for asking about your Audi A4. Unfortunately, we don’t manufacture a product intended to seal a head gasket that is leaking oil. BlueDevil Head Gasket Sealer is only intended for water/coolant leaks. A hard part repair/engine replacement may be your best option.

            Thank you!

            -BDP



          • Wes Neal on January 2, 2023 at 4:11 pm

            Can I use your Head gasket sealer after using Barr’s Head gasket sealer with fiber a mouth ago, that stopped 90 percent of the smoke at cold start? Just a little smoke at cold start now and a little antifreeze lost, but not in the oil only being burnt in the exhaust . Motor runs fine but don’t want to clogg up cooling system. Thanks Wes Neal.



          • BlueDevil Pro on January 3, 2023 at 11:41 am

            Wes-

            You would want to flush the cooling system prior to using the BlueDevil Head Gasket Sealer. A clean, free-flowing system is what will give the product the best chance of working properly.

            Thank you!

            -BDP



          • Thomas McNeal on February 25, 2023 at 11:28 pm

            Got an 85 Nissan 720 it’s got just a little bit of a leak cause I’ve noticed would I be better off draining everything and using the concentrated bottle then using the pour and go I’m looking to get at least another couple years out of the truck



          • BlueDevil Pro on February 27, 2023 at 8:40 am

            Thomas-

            You may use either of the two Head Gasket Sealers or the Head Gasket Repair. The Pour N Go Head Gasket Sealer is an easy to use, less concentrated formula that does not require the removal of the thermostat or a flush of the cooling system prior to use. BlueDevil Head Gasket Repair is also an easy to use product that is 2x more concentrated than the BlueDevil Pour N Go Head Gasket Sealer. Whereas the “Mechanic Approved” requires both the removal of the thermostat and a flush before applying the product; the 32 ounce is the strongest 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” Head Gasket Sealer or Head Gasket Repair.

            Thank you!

            -BDP



        • Jeffery on February 19, 2023 at 1:27 pm

          Because of the situation I was in I wasn’t able to drain that much of the coolant from the radiator. I used about 80% of the bottle. Will it still fix the gasket? Also should I add the remaining amount later?

          • BlueDevil Pro on February 20, 2023 at 9:12 am

            Jeffery-

            It is possible the product was still able to seal under those conditions. Have you noticed any improvement? Please contact our technical support line at 888-863-0426 for further asssistance.

            Thank you!

            -BDP



      • Joe on July 2, 2014 at 7:12 pm

        So do you put the thermostat back in after you run through the BlueDevil process? I’m a novice about automobiles and looking for very specific instructions about using BlueDevil w/a 2003 Ford Expedition.

        Thanks
        Joe

        • BlueDevil Pro on July 3, 2014 at 2:30 pm

          Joe,

          I would encourage you to give our Tech Line a call at 1.888.863.0426. They are available to help you with any specific questions in regards to the installation process. I’d recommend doing this prior to installation. If you don’t get a live rep, leave a message! They WILL call you back, usually within a few hours at most.

          -BDP

          • brandon on August 21, 2016 at 8:10 pm

            do you think it would work if my car doesnt start



          • BlueDevil Pro on August 22, 2016 at 9:10 am

            Brandon-

            In order to get the benefit of the product, the vehicle would need to be able to idle for a full 50 minutes, without overheating or stalling out. Unfortunately, the car would not be a good candidate if the vehicle is unable to start.

            Thank you!

            -BDP



          • Kevin on February 5, 2018 at 5:53 pm

            Hi,I have a 2001-2005 Honda Civic 1.7 l which is also know for head gasket issues….Is it ok to add Bluedevil if you don’t have a blown hg just so it will seal that area or would it get hard and not work…I’m afraid my hg is going to blow but I don’t have any issues right now with it…Kevin



          • BlueDevil Pro on February 6, 2018 at 10:46 am

            Kevin-

            Thank you for asking about your Honda Civic. The BlueDevil Head Gasket Sealer should not be used as a preventative measure or preventative maintenance. It is only intended for water/coolant leaks. At this point, if you are not noticing a leak, it would not be appropriate to use the product. Hope this helps!

            Thank you!

            -BDP



          • Jerermiah on June 18, 2021 at 4:13 pm

            Does blue devil head gasket repair stop exaust from going in coolant?



          • BlueDevil Pro on June 21, 2021 at 8:19 am

            Jeremiah-

            Yes, the BlueDevil Head Gasket Repair would be able to treat a leak where combustion/exhaust gases are pumping into the cooling system. 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



      • David Straw on July 23, 2014 at 3:04 am

        Dose this product work or am i wasting my time and money

        • BlueDevil Pro on July 29, 2014 at 5:20 pm

          Yes, our products carry a success rate over over 90%. We offer a money back guarantee for the small percentage of customers that they do not work for.

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

          • jennifer on August 8, 2014 at 1:15 pm

            i have a 1998 pontiac sunfire. i took it to the garage and they told me that it was the head gasket. how long does it take to change one of these, and how effective is your product?



          • BlueDevil Pro on August 8, 2014 at 2:53 pm

            Jennifer,

            Replacing your head gasket is a very timely job. Our products are very effective and carry a money back guarantee. If you have more questions regarding the installation process please give our tech line a call at 1.888.863.0426.

            Thanks,
            BDP



          • Bill Connell on June 24, 2021 at 10:12 pm

            You say to pull the spark plug on the leaking cylinder, what about on a 6.7 Cummins Diesel engine?



          • BlueDevil Pro on June 25, 2021 at 8:22 am

            Bill-

            Unfortunately, this recommendation would not be applicable for your Cummins Diesel, as you would not be able to pull the glow plugs. As long as the vehicle will maintain idle for the full 50 minutes, without overheating or stalling out, and you are not losing more than about a quart of water/coolant during that 50 minute run, you would still 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



          • Jess on January 12, 2022 at 3:30 am

            I have a 2011 mazda cx7 grand contouring and my tailpipe blowing white smoke and engine light on,radiator light on did a code reading indicating it needs a coolant sensor would blue devil be good to use without taking my thermostat off,help please…



          • BlueDevil Pro on January 12, 2022 at 8:41 am

            Jess-

            Thank you for asking about your Mazda CX7. You may use either of the Head Gasket Sealers that we manufacture. The “Pour-N-Go” (16 oz./white label) is an easy to use, 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 the thermostat and a flush before applying the product; the 32 ounce (yellow label) is the more concentrated formula. The product with the yellow label will give you best overall results as long as you are willing to remove the thermostat and flush the system prior to use. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

            Thank you!

            -BDP



        • Christopher on January 8, 2022 at 6:04 pm

          Does this product work for head gasket leaks of oil?

          • BlueDevil Pro on January 10, 2022 at 8:15 am

            Christopher-

            Unfortunately, we do not manufacture a product intended to stop oil leaks from the head gasket. A hard part repair may be your best option.

            Thank you!

            -BDP



      • Richard Rivet on January 25, 2015 at 2:30 pm

        I have a 1999 honda passport with the v6 .I just purchased the Blue devil yellow lable and flush online but now I just realised that half of the engine has to come apart just to remove the thermostat. I can bypass the heater core but it is so much work to remove the thermostat that I may as well just change the gasket or is it possible to us the yellow lable without removing the thermostat?

        • BlueDevil Pro on January 27, 2015 at 10:17 am

          Richard-

          For best overall results the thermostat should be removed when using the 32 ounce BlueDevil (yellow labeled) Head Gasket Sealer. If it is going to be difficult to remove then you would be better off using the BlueDevil Pour-N-Go Head Gasket Sealer due to the fact that it does not require the removal of your thermostat.

          -BDP

      • Alex on February 2, 2015 at 10:18 am

        What do I do if water leaked to the oil?? Do I have to do an oil change before doing the flush?? Or can I do the flush and sealant before an oil change?

        • BlueDevil Pro on February 2, 2015 at 1:41 pm

          Alex-

          Yes, you may still use the BlueDevil Head Gasket Sealer to seal the leak(s). For best results, you will want to change the oil before and after the BlueDevil process.

          Thank you for your question!

          -BDP

      • mike on September 4, 2015 at 11:21 am

        I do not know a lot about cars and have done the test with he radiator cap off and it erupts like a volcano.I can’t afford the $2500 or more to replace the gasket, and I know I can’t remove all the stuff it says to so is it OK to use the 16oz or should I find some to help remove the thermostat and use the 32oz? There is no smoke /steam coming from the exhaust

        • BlueDevil Pro on September 19, 2015 at 10:24 am

          Mike,

          Thanks for your question about your blown head gasket. If your vehicle is a 4 or 6 cylinder than it should be fine to use the 16oz BlueDevil Pour-N-Go to seal your head gasket leak. If you have an 8 cylinder vehicle then we would recommend using the 32oz BlueDevil Head Gasket Sealer.

          Let us know if you have any more questions!
          -BD Auto Pro

        • Bonnie anderson on February 23, 2019 at 2:25 pm

          Should I redrain my coolant with the blue devil in it after the 50 minute idel. Before I pit in new coolant.

          • BlueDevil Pro on February 25, 2019 at 9:04 am

            Bonnie-

            The BlueDevil Head Gasket Sealer only reacts to heat once, so it would be fine to drain the system completely and refill it with your regular 50/50 mix once the procedure is complete.

            Thank you!

            -BDP



      • Karl on February 7, 2016 at 2:24 pm

        Can blue devil, white label be used on a v8 ?

        • BlueDevil Pro on February 8, 2016 at 10:51 am

          Karl-

          Yes, but you will need to add two 16 ounce bottles of BlueDevil Pour N Go Head Gasket Sealer to treat a V8.

          Thank you!

          -BDP

          • Queet on October 4, 2022 at 6:18 pm

            Is it ok that my fans don’t come on with the blue devil in it?



          • BlueDevil Pro on October 5, 2022 at 8:24 am

            Queet-

            As long as the engine doesn’t overheat during the 50-minute idle, the product should still be able to seal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



          • Roberto on June 5, 2023 at 9:10 am

            How many bottles do I need for my nissan frontier 2003 3.0 v6 ..I put one bottle but still the gage goes up not as much before but still



          • BlueDevil Pro on June 5, 2023 at 11:10 am

            Roberto-

            You would need about 16 ounces of the product for your Nissan. Feel free to contact our technical support line at 888-863-0426 for further assistance.

            Thank you!

            -BDP



          • DR on July 27, 2023 at 5:50 pm

            Expanding on the question above, can you use half of the yellow label more concentrated formula on a V8 and not remove thermostat and drain?



          • BlueDevil Pro on July 28, 2023 at 8:30 am

            DR-

            You can not use the BlueDevil Head Gasket Sealer (32 oz. yellow label) without removing the thermostat and flushing the cooling system prior. If removing the thermostat is an issue, or if you’re really just looking to avoid doing so, we’d recommend using the BlueDevil Pour-N-Go Head Gasket Sealer.

            Thank you!

            -BDP



      • Cornell Long on August 20, 2016 at 7:12 pm

        What if you didnt flash the radiator and pour the bluedevil into the coolant will it do any harm

        • BlueDevil Pro on August 22, 2016 at 11:36 am

          Cornell-

          It wouldn’t necessarily do any harm in the cooling system, however, you would be limiting what the product would be able to do. The reason for flushing the radiator is to ensure you are performing the BlueDevil process in a clean, free-flowing system. Also, the BlueDevil Head Gasket Sealer (32 oz. yellow label) is specifically formulated to run with water in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

          • Dan on January 22, 2017 at 4:14 pm

            I flushed my truck without flushing as well. It worked, but I still have a dirty cooling system. Can I still flush the cooling system to get rid of the exhaust particulate?



          • BlueDevil Pro on January 23, 2017 at 10:13 am

            Dan-

            Yes, at this point, you would be safe to flush the cooling system. We recommend using the BlueDevil Radiator Flush http://store.gobdp.com/radiator-flush-00204/. Flushing the system would not undo any of the seal the product already created.

            Thank you!

            -BDP



      • Tanasha on December 1, 2016 at 4:49 pm

        I have 2000 ford taurus and I think I have a blown head gasket will this product work what do I have to do

        • BlueDevil Pro on December 2, 2016 at 10:05 am

          Tanasha-

          Thank you for asking about your Ford Taurus. 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

        • Joe on July 10, 2020 at 7:50 am

          How much Blue Devil Sealant ( Yellow Label) do I need for a 2003 Tacoma 4 cylinder 2 gallons coolant capacity truck?

          • BlueDevil Pro on July 10, 2020 at 8:26 am

            Joe-

            You would be adding about 10-12 oz. of the BlueDevil Head Gasket Sealer for your Toyota Tacoma. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Najee on January 17, 2017 at 8:27 am

        Can it be used to seal up my manifold leak?

      • Antoine Joshua Marshall on January 25, 2017 at 5:05 pm

        I use the yellow label bottle without removing my thermostat on accident

        • BlueDevil Pro on January 26, 2017 at 9:06 am

          Antoine-

          Please contact our technical support line at 888-863-0426 so that we can get a clear understanding of the vehicle’s condition and be able to make any appropriate recommendations. The thermostat must be removed when using the BlueDevil Head Gasket Sealer (32 oz. yellow label) in order to get proper results.

          Thank you!

          -BDP

        • Juan Tamayo on January 8, 2021 at 12:52 am

          Did anything bad happen to your vehicle ? I’m in the same boat !

      • Thfb on February 18, 2017 at 1:28 pm

        How many ounces do I use in a Toyota Camry 6 cylinder

      • William on March 10, 2017 at 5:42 am

        I just poured the 32 oz bottle in my radiator, without flushing, or removing the thermostat as recommend . Can I go and purchase the 16oz bottle and use it now? And if so can I use two bottles?

        • BlueDevil Pro on March 10, 2017 at 10:21 am

          William-

          It is very important to flush the radiator and remove the thermostat prior to using the BlueDevil Head Gasket Sealer. 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

      • Patty on March 11, 2017 at 11:41 am

        All the auto parts store near me only sell the 16 of will that work on a 350

        • BlueDevil Pro on March 13, 2017 at 10:26 am

          Patty-

          The BlueDevil Pour-N-Go Head Gasket Sealer is intended for use in 4 or 6 cylinder engines. You can still use the product in your Ford F-350, however, you would need more of the product to properly treat the system. Please contact our technical support line at 888-863-0426 so that we can get a better idea of the cooling system capacity and be able to recommend the correct amount of the product to use.

          Thank you!

          -BDP

      • Hunter on March 13, 2017 at 7:49 pm

        Do you have to change the before or after using blue devil?

        • BlueDevil Pro on March 14, 2017 at 9:56 am

          Hunter-

          I assume your question is asking about changing the oil in your vehicle in regards to using the BlueDevil Head Gasket Sealer. If you are getting water/coolant 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

      • Christopher Munoz on March 22, 2017 at 3:40 am

        I have a 1991 honda accord how much of this product am i suppose to use and is it a one time thing or do i apply more of it everyday once a week or ?
        Thank you

        • BlueDevil Pro on March 22, 2017 at 10:28 am

          Christopher-

          You would use about 10-12 ounces of the BlueDevil Head Gasket Sealer to properly treat your Honda Accord. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Michael Rudd on March 27, 2017 at 4:07 pm

        Just curious about use in a 2008 6.4 power stroke I’m leaking from the passenger back corner of the head and a freeze plug. Is this stuff safe for a 6.4 power stroke?

        • BlueDevil Pro on March 28, 2017 at 8:59 am

          Michael-

          Yes, the BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/) is safe and compatible to use on your 6.4 power stroke. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

          • Kirstin Burrage on May 7, 2019 at 6:10 pm

            I have a 2014 Nissan Frontier that is loosing all of the coolant through the overflow tank. It boils out. So I’m guessing gas is getting out of the chamber. It doesn’t state on the bottle that I need to remove a spark plug, tho I read it in the comments here. Removing a spark plug from my truck is almost as serious as replacing the head gasket. What should I do? Will anything work?



          • BlueDevil Pro on May 8, 2019 at 9:15 am

            Kristin-

            Thank you for asking about your Nissan Frontier. Removing the spark plug is an additional recommendation we make when the vehicle has the symptom of combustion/exhaust gases pumping back into the cooling system. Unfortunately, it is a more extreme kind of leak, usually attributed to warped/cracked heads. In order to get the benefit of using the product, you would want a clean, free-flowing cooling system. If combustion/exhaust gases are getting into the system, the system is being over-pressurized, and the circulation of water/coolant is being restricted. Removing the spark plug from the affected cylinder would give the product the best chance of circulating and sealing properly.

            Thank you!

            -BDP



          • Kirstin on May 8, 2019 at 1:38 pm

            I’m in the process of using the yellow label blue devil’s now. While idling, my 2014 Nissan Frontier does not boil all of the water out of the resavoir. Why is that? As soon as it hits the pavement, it starts boiling out, as if it’s allergic to the road. Lol I can’t take a spark plug out, I would have to take half of the manifold off.
            Also, the entire time it has been idling, the radiator fan has not come on. It’s 85 degrees here today, shouldn’t it have come on by now? My Nissan isn’t overheating. Yet… But it’s not boiling out water yet either.



          • BlueDevil Pro on May 8, 2019 at 3:43 pm

            Kristin-

            It sounds like it will be able to idle the full 50 minutes without removing the spark plug. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • Larry on May 1, 2017 at 3:55 pm

        If you have water in your oil will the Blue Devil head gasket sealer still work

        • BlueDevil Pro on May 1, 2017 at 3:57 pm

          Larry-

          Yes, BlueDevil Head Gasket Sealer will still work if water/coolant has entered the engine oil. We recommend that you change the oil before and after the BlueDevil procedure to ensure proper results.

          Thank you!

          -BDP

      • Denika on May 2, 2017 at 3:38 pm

        I don’t no we’re to put it in my car

        • BlueDevil Pro on May 2, 2017 at 3:57 pm

          Denika-

          BlueDevil Head Gasket Sealer should be added directly through your radiator cap.

          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 overflow bottle. Once it has been added reconnect the hose and start the idle from that point.

          Thank you!

          -BDP

          • Gary Ward on January 30, 2023 at 12:03 am

            On my 2002 ford escape 3.0 I have 2 hoses at top of radiator,smaller comes from reservoir and the larger is just below it. The larger doesn’t go to the thermostat,the lower large hose does, and when I pull the large top hose to pour blue devil in water starts pouring out of the hole where it was connected. I’m just wandering is this where I pour it into? Every thing I read says top hose goes to thermostat n bottom to water pump but on mine top goes passed the thermostat and the bottom straight to the thermostat. Should I pour into the smaller hose directly above the large one?



          • BlueDevil Pro on January 30, 2023 at 9:53 am

            Gary-

            Thank you for asking about your Ford Escape. Yes, it would be fine to add the product through the smaller hose on top of the radiator. You would do so with the vehicle off and engine cold. Once the product has been added, reconnect the hose, and then start the idle from that point.

            Thank you!

            -BDP



      • Manny on May 3, 2017 at 9:34 pm

        How Long do I wait to put coolant in after I use this

        • BlueDevil Pro on May 4, 2017 at 8:33 am

          Manny-

          We recommend waiting about 2 hours, to ensure the system is cool enough to add coolant.

          Thank you!

          -BDP

      • Harold on May 23, 2017 at 6:29 pm

        I have a 7.7 turbo diesel hino j08e engine. It has a bad head gasket causing back pressure. If I use the 32oz. As directed would blue devil work

        • BlueDevil Pro on May 24, 2017 at 11:43 am

          Harold-

          Yes, the BlueDevil Head Gasket Sealer would be able to seal the leak in your turbo diesel. 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

          • Josh on July 31, 2019 at 8:11 pm

            I have a 2003 Toyota salara and for some reason my radiator pushing the water back Thur my overflow not the engine how do I use the Blue Devil



          • BlueDevil Pro on August 1, 2019 at 8:49 am

            Josh-

            Thank you for asking about your Toyota Solara. Based on your description, it’s 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



      • Pepe on August 15, 2017 at 2:09 pm

        So I have a Volvo s70 1999 and the engine turns but won’t start! When I crank it with the reservoir tank open the water goes and comes in sync with the motor. Is it too far gone?! It worked wonders on my ML320! I can’t believe how much money you guys saved me! You have an amazing product!

        • BlueDevil Pro on August 16, 2017 at 8:58 am

          Pepe-

          Thank you for asking about your Volvo s70. 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 won’t start, unfortunately, it would not be a good candidate for the product. A hard part repair may be your best option.
          We’re glad to hear of the results you had on your ML320! Thank you for sharing.

          Thank you!

          -BDP

      • bill on November 11, 2017 at 6:48 pm

        My vehicle runs cool not operating temp without thermostat is that OK

        • BlueDevil Pro on November 13, 2017 at 9:42 am

          Bill-

          As long as you are not worried about the vehicle’s heat function, leaving the thermostat would be fine. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Tyrone on December 6, 2017 at 7:26 pm

        Do I have to drain the pourand go

        • BlueDevil Pro on December 7, 2017 at 9:21 am

          Tyrone-

          The BlueDevil Pour-N-Go Head Gasket Sealer only reacts to heat once. After the initial 50 minute idle and you shut the vehicle off, the product will not continue to react or continue to seal. You are fine to leave the product in the system, or you can drain the system and start over with a clean 50/50 mix, either way would be fine.

          Thank you!

          -BDP

      • Jhon adams on January 9, 2018 at 8:55 pm

        I noticed that has different information about red labels and white labels one says remove the termostats I used twice the 16 Oz with termostats on as full heater on my cat stop blown heat for some reason is there any one can give me the answere why Mt cat not blown heat as it should be or some thing wrong

        • BlueDevil Pro on January 10, 2018 at 12:23 pm

          Jhon-

          Yes, we manufacture two different head gasket sealers with two different sets of directions. 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

      • Kacy on March 23, 2018 at 8:02 pm

        Won’t it plug up the heater n ac ?

        • BlueDevil Pro on March 26, 2018 at 9:42 am

          Kacy-

          The BlueDevil Head Gasket Sealer does not contain any solid or particulate matter, so it would not have some of the clogging/restricting tendencies that some other products could have. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Jonathan on May 26, 2018 at 3:00 pm

        Can you use the pour and go on a v8 engine? Will it even work the. Bottle says 4 or 6 cy I have e a v8

        • BlueDevil Pro on May 29, 2018 at 8:24 am

          Jonathan-

          You would need two bottles of the BlueDevil Pour-N-Go Head Gasket Sealer to treat your V-8. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Seth on July 10, 2018 at 9:08 am

        Hey I put the blue devil in my 06 Altima and it worked but I didn’t put the thermostat back in will it hurt anything if I don’t ?

        • BlueDevil Pro on July 10, 2018 at 9:36 am

          Seth-

          It would not harm anything to run the engine with the thermostat removed. The engine will run at a lower temperature so you may notice the heater does not produce hot air. However, most likely you will not need the heater during this time of year.

          Thank you!

          -BDP

      • David Moore on August 14, 2018 at 1:59 pm

        Can it be used in v8 engines

        • BlueDevil Pro on August 14, 2018 at 3:19 pm

          David-

          Yes, the BlueDevil Head Gasket Sealer is safe and compatible to use in V-8 engines. The Pour-N-Go Head Gasket Sealer (16 oz. white label) is intended for use in 4 or 6 cylinder engines and require two bottles for a larger engine. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • David on September 11, 2018 at 4:34 pm

        I have a 6.0 diesel will it work on it?

        • BlueDevil Pro on September 12, 2018 at 8:17 am

          David-

          Yes, the BlueDevil Head Gasket Sealer is safe and compatible to use on your 6.0 diesel. 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 during that 50 minute run, you would be a good candidate for the product.

          Thank you!

          -BDP

      • DAVID LUCIUS on September 25, 2018 at 6:25 pm

        How long do I wait to drive it after putting it in?

        • BlueDevil Pro on September 26, 2018 at 9:19 am

          David-

          We recommend at least two hours of a cool down after the 50 minute idle. After the vehicle cools back down, you would be fine to top it off with water/coolant as needed and take it for a test drive at that point.

          Thank you!

          -BDP

      • Carl on November 26, 2018 at 2:31 pm

        If I have water in my oil will it fix it to

        • BlueDevil Pro on November 27, 2018 at 9:10 am

          Carl-

          The BlueDevil Head Gasket Sealer would be able to treat water getting into the engine oil. As long as you are not losing water too quickly, you would be a good candidate for the product. You would want to change the oil before and after the BlueDevil procedure.

          Thank you!

          -BDP

      • Kimberly on January 9, 2019 at 4:00 pm

        Does your heater have to be working for product to work?

        • BlueDevil Pro on January 10, 2019 at 8:45 am

          Kimberly-

          Are you saying that your heater core is leaking or that you aren’t getting hot air when you put the heater on? As long as the vehicle will maintain idle for a full 50 minutes, without overheating, you would still be a good candidate for the product. The BlueDevil Head Gasket Sealer is able to seal heater core leaks as well. Feel free to contact our technical support at 888-863-0426 with any other questions.

          Thank you!

          -BDP

          • Aaron on September 4, 2021 at 12:19 am

            I have a 2004 Jeep Grand Cherokee v8, is one bottle of the mechanic approved enough?



          • BlueDevil Pro on September 8, 2021 at 8:28 am

            Aaron-

            Yes, one bottle of the BlueDevil Head Gasket Sealer would be sufficient for your Jeep Grand Cherokee. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP



      • larry james taylor on February 11, 2019 at 3:17 am

        Do apply the sealer if car wont start on a cadillac seville 1997

        • BlueDevil Pro on February 11, 2019 at 9:55 am

          Larry-

          Thank you for asking about your Cadillac Seville. In order to get the benefit of using the BlueDevil Head Gasket Sealer, the vehicle would need to be able to start and idle for a full 50 minutes. If it is unable to do so, the leak you have or the symptoms you’re having may be a little more extreme than what the product is intended for. A hard part repair may be your best option.

          Thank you!

          -BDP

      • Abdullah Jones on February 18, 2019 at 11:38 am

        Can blue devil work on a v10 if I pour two white labels in the radiator?

        • BlueDevil Pro on February 18, 2019 at 1:50 pm

          Abdullah-

          Two bottles of the BlueDevil Pour-N-Go Head Gasket Sealer would treat a cooling system up to around 4.5 gallons capacity. The product would be compatible to use on a V-10 engine.

          Thank you!

          -BDP

      • Jamie L Joyce on July 26, 2020 at 11:11 pm

        what if you can’t remove the thermostat like on a diesel it’s built in

        • BlueDevil Pro on July 27, 2020 at 8:31 am

          Jamie-

          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.

          Thank you!

          -BDP

      • Kountry on October 5, 2020 at 12:58 pm

        I was just in a bad car accident and now I’m down to just one truck and it has blown head gasket and I’m so hurt that I can’t remove the Thermostat will the product still work good If I just do blue devil and then oil change will it fix the problem I hope so I have a 5.9 dodge

        • BlueDevil Pro on October 5, 2020 at 3:55 pm

          Kountry-

          Thank you for asking about your Dodge. The BlueDevil Head Gasket Sealer ( 32 oz. 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” Head Gasket Sealer or Head Gasket Repair. The products may be added with fresh antifreeze or water. Based on your cooling capacity, you should apply 32 ounces of BlueDevil.

          Thank you!

          -BDP

      • Anthony Marquez on November 29, 2020 at 4:08 pm

        I have a chevy 454 how many bottles would have to use?

        • BlueDevil Pro on November 30, 2020 at 9:50 am

          Anthony-

          One bottle of the BlueDevil Head Gasket Sealer should be sufficient for your Chevy 454. There is a cooling system capacity table on the back of the bottle which would show you how much product to use, per the vehicle you’re working with.

          Thank you!

          -BDP

      • Ogreatone on December 23, 2020 at 12:19 pm

        Can you apply the Pour N Go formula and if your results work can u flush system and then add the Yellow Label 32 ounce

        • BlueDevil Pro on December 23, 2020 at 1:42 pm

          Ogreatone-

          The product should not be used as a preventative measure/maintenance. If you are not continuing to lose coolant after using the BlueDevil Pour-N-Go Head Gasket Sealer, it would not be necessary to add anymore. Once the product seals, it would be a permanent seal.

          Thank you!

          -BDP

        • Eugene carrion on August 30, 2021 at 11:17 pm

          I have a 2012 sonata and it is losing coolant.and runs great and no coolant in oil. What size bottle should I use and what procedure should I do to fix the problem thanks

          • BlueDevil Pro on August 31, 2021 at 8:26 am

            Eugene-

            Thank you for asking about your Hyundai Sonata. Do you know where the leak is coming from? How quickly are you losing cool? 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



      • Wayne Harrell on March 8, 2021 at 5:29 pm

        I have a 1980c10 Scott’s dale had for 16years two weeks ago the head gasket blew I put bars head gasket sealer in didn’t work will this kind work and can I get my money back if it doesn’t

        • BlueDevil Pro on March 9, 2021 at 8:57 am

          Wayne-

          What are the symptoms the vehicle is having? Yes, the BlueDevil Head Gasket Sealer carries a money-back guarantee. 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

      • Daniel on March 14, 2021 at 9:30 am

        In my Silverado the thermostat is made in the thermostat housing so can you put it in with the thermostat in place

        • BlueDevil Pro on March 15, 2021 at 10:34 am

          Daniel-

          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.

          Thank you!

          -BDP

      • Brian on June 24, 2021 at 6:10 pm

        So I have a 2004 Land Rover, when started it makes a hissing popping sound from the head gasket being blown, I have used Blue Devil before with a 100% success. The question is will the big bottle fix the issue it being a crack about a half inch.

        • BlueDevil Pro on June 25, 2021 at 8:18 am

          Brian-

          Thank you for asking about your Land Rover. How quickly is it losing 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

      • Deedee smith on July 21, 2021 at 1:36 pm

        I have a 2003 alero thermastat in hard area does it have to be removed before using this product

        • BlueDevil Pro on July 21, 2021 at 3:55 pm

          Deedee-

          Thank you for asking about your Oldsmobile Alero. If removing the thermostat is an issue, we recommend using the BlueDevil Pour-N-Go Head Gasket Sealer. This is an easy, do it yourself formula that does not require the removal of the thermostat. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Jerry on July 23, 2021 at 10:13 am

        I used bar’s and it hasn’t worked all that well, is it safe to use the blue devil pour and go after using bar’s?

        • BlueDevil Pro on July 23, 2021 at 10:43 am

          Jerry-

          You would want to make sure the cooling system is thoroughly flushed prior to adding the BlueDevil. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Charlotte Price on September 8, 2021 at 4:58 pm

        ii have a 2004 pt cruiser and i think i have a warped head will this help. it runs hot so will it still work.

        • BlueDevil Pro on September 9, 2021 at 8:17 am

          Charlotte-

          Thank you for asking about your PT Cruiser. The BlueDevil Head Gasket Sealer is able to treat warped heads. As long as the vehicle will maintain idle for a full 50 minutes, without overheating or stalling out, and you are not losing more than about a quart of water/coolant during that 50-minute run, you would be a good candidate for the product.

          Thank you!

          -BDP

      • roland on September 28, 2021 at 2:10 am

        do you mean i can use the blue devil 32 oz without removing my termostat? i already purchased the 32oz bottle…so im thinking if i will buy another? tnx

        • BlueDevil Pro on September 28, 2021 at 8:20 am

          Roland-

          The product with the yellow label (32 ounce) will give you best overall results as long as you can remove the thermostat and flush the cooling system prior to use. If you are unable to remove the thermostat, or doing so it just too time consuming, the Pour-N-Go Head Gasket Sealer (16 ounce) would be the next best option.

          Thank you!

          -BDP

      • Anthony Bolding on October 30, 2021 at 11:15 pm

        Is is blue devil gasket head gasket sealer good for V8 system?

        • BlueDevil Pro on November 1, 2021 at 9:02 am

          Anthony-

          The BlueDevil Head Gasket Sealer (32 oz. yellow label) would be the recommended product for a V-8. There is a cooling system capacity table on the back of the bottle which would show how much product to use per the system you are working with. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Arthur cage on November 11, 2021 at 3:44 pm

        The directions say my engine must be cool before using can I do it while engine is hot?

        • BlueDevil Pro on November 12, 2021 at 8:27 am

          Arthur-

          No, the BlueDevil Head Gasket Sealer must be added when the engine is cold. We recommend at least 2 hours of a cool down since the vehicle has been run last before adding the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Amy on January 14, 2022 at 10:23 pm

        Hi I have a 2005 Ford 500 that had a blown head gasket I use the blue devil and did like it said and added water and it went into the Reservoir will the car still be okay

        • BlueDevil Pro on January 17, 2022 at 9:09 am

          Amy-

          Thank you for asking about your Ford 500. 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.
          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

      • Curtis on August 16, 2022 at 1:34 pm

        Will it work on 2k suburban. I see a lot of posts saying it’s for 4 and 6 cylinder but haven’t seen it say 8 cylinder

        • BlueDevil Pro on August 16, 2022 at 2:43 pm

          Curtis-

          The BlueDevil Head Gasket Sealer (32 oz. yellow label) would be the best product to use for your 8-cylinder. 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

      • Ianott on November 11, 2022 at 9:19 pm

        Ho I was wondering about the yellow label where you have to remove the thermostat. What is you don’t have a radiator cap?

        • BlueDevil Pro on November 14, 2022 at 8:56 am

          Ianott-

          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

      • Eddie b on December 9, 2022 at 5:39 am

        Does exaust games mixing with coolant a blown head gasket . I truly don’t think so need an opinion I work on cars

        • BlueDevil Pro on December 9, 2022 at 8:39 am

          Eddie-

          Combustion/exhaust gases pumping into the cooling system, with no other symptoms, would typically be a sign of warped/cracked heads. Water/coolant mixing in with the engine oil and/or white smoke/steam billowing out of the exhaust pipe would be the tell-tale signs of a blown head gasket. Hope this helps.

          Thank you!

          -BDP

      • Cedric Neal on December 28, 2022 at 7:56 am

        I have an 08 Pontiac g6 water is mixing in with my oil and water is leaking out of a crack just between the valve cover and sparks plugs I was wondering should I use the blue devil head gasket sealer or something else

        • BlueDevil Pro on January 3, 2023 at 11:11 am

          Cedric-

          We’d recommend using the BlueDevil Head Gasket Sealer for the leak you’ve described. You would want to change the oil before and after the BlueDevil process.

          Thank you!

          -BDP

      • Doug Sells on February 16, 2023 at 12:55 pm

        What if my radiator don’t have a cap but my reservoir has a pressure cap, do I pour it directly in the reservoir or in the housing where the thermostat goes cause water is going into my oil I already changed the oil too