What are the symptoms of a Blown Head Gasket?

There are some makes or models of cars that have a reputation for blowing head gaskets.  One vehicle I owned had such a bad reputation for head gasket problems it there was a group of owners trying to get the manufacturer to have a recall on them.  If you happen to own one of these vehicles, don’t worry it does not mean that you have a bad car or that you are going to spend lots of money.

Blow Head GasketThe head gasket forms a seal between the engine block and the cylinder head.  This seals both the combustion chamber and the coolant passages in your engine.  This means your head gasket has to seal both extremely hot high pressure combustion gases as well as engine coolant which can be anywhere from cold ambient temperatures to the normal operating temperature of your engine.  Do to the wide range of temperatures and relatively large surface area, it is not unusual for head gaskets to develop leaks over time.

Since the head gasket seals the coolant passage both from the atmosphere and the combustion chamber you can’t see or get too much of the head gasket on a vehicle.  Because much of the gasket can’t be seen without disassembling the engine, it can be very difficult to diagnose a head gasket leak.  Since a visual inspection usually will not prove a head gasket leak, it is important to know the other symptoms so you can accurately diagnose a head gasket problem.

Blown Head Gasket Symptoms:

  • Coolant leaking externally from bellow the exhaust manifold
  • White smoke from the exhaust pipe
  • Overheating engine
  • Bubbles in the radiator or coolant overflow tank
  • White milky oil
  • Significant loss of coolant with no visible leaks

The only externally visible sign of a blown head gasket would be coolant externally leaking from the head gasket.  The head gasket will be below or inboard of the exhaust manifold.  Most head gasket leaks will be between the combustion chamber and the coolant passage in your engine.  On the intake stroke of the cylinder closest to the leak, coolant will be drawn in under the vacuum created along with the intake air charge.  Upon combustion, the high pressure will force exhaust gases past the head gasket into the coolant passage.  This process will repeat itself for every revolution the engine makes.

Blown Head GasketAs coolant is pulled into the combustion chamber it will cause your engine coolant level to drop.  This can cause a low coolant light and overheating if the cooling system on your vehicle is not continually topped off.  Also, once your engine is turned off the coolant still left in the engine cylinder will seep past your piston rings into your engine oil.  Coolant mixed with oil will make a white milky substance.  You may see this on your engine oil dip stick or on a ring around your oil cap.

If your engine is running the small amount of coolant that is in the combustion chamber will turn into steam and white smoke upon combustion.  If you are checking your exhaust pipe for signs of white smoke, make sure your vehicle is fully warmed up and idling during a warm part of the day.  A cold engine on a cool day will produce a small amount of water vapor which will look like white smoke from your exhaust pipe.  If the exhaust has a sweet smell to it then it mostly likely is a head gasket problem.

350x200_BDLastly, during the combustion process the high pressures in the cylinder can push exhaust gases past the head gasket into the engine cooling system.  The exhaust gases will be trapped in the cooling system and will be circulated through your engine and into the radiator.  During normal operation your engine’s cooling system remains under pressure, so never remove the radiator cap while the engine is operating or still warm.  If your vehicle has a coolant overflow tank you can check that for the presence of bubbles.  To be certain you can purchase a test kit from your local auto parts store that will chemically check your engine coolant for the presence of exhaust gases.

Usually one of these symptoms by itself is not enough to prove you have a head gasket leak, but if you have multiple symptoms at the same time it is likely that you have a head gasket leak.  It is important to drive your vehicle as little as possible if you have a head gasket leak.  The hot gases and cold coolant moving through the hole in the gasket can quickly erode or warp the metal head or engine block leaving you with costly machining bills or even having to purchase new heads or a new engine.

To quickly a permanently seal your blown head gasket, go to your local auto parts store and pick up one of BlueDevil’s head gasket sealing products.  If you have a small leak or 4 or 6 cylinder engine pick up BlueDevil Pour-N-Go 16oz head gasket sealer.  Simply add it to your radiator and your head gasket leak will be sealed as your drive!  For larger leaks or 8 cylinder engine use BlueDevil Head Gasket Sealer.  BlueDevil Head Gasket Sealer requires the removal of your vehicles thermostat and a complete cooling system flush but is guaranteed to fix your blown head gasket!

BlueDevil Head Gasket Sealer

Don’t risk getting stranded or damaging your vehicles engine by driving with a blown head gasket.  Stop by your local auto part store today and pick up the quick and easy solution from BlueDevil!

BlueDevil products are available at:

  • Prime Automotive
  • CarQuest Auto Parts
  • Advance Auto Parts
  • Pep Boys
  • AutoZone
  • NAPA
  • O’Reilly Auto Parts
  • Bennett Auto Supply

Pictures provided by: freecarsupport.com and www.dieselpowermag.com

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433 responses to “What are the symptoms of a Blown Head Gasket?

  1. I tried your white label head gasket repair product on an external head gasket leak. I was unsuccessful in repairing the leak. Do you have any advice I should follow, or do I just need to go through the process of getting a refund? Thanks, Jack.

      1. My car has some white smoke but not noticeable but my car heats 3/4 to redline when accelerate or up a hill

        1. Jerald-

          Please contact our tech support team at 888-863-0426 so that we may discuss all of the symptoms you are experiencing. With further information we will be able to make the best recommendation to you.

          Thanks!

          -BDP

      2. I have a 1998 mercury grand marquis overheating, taking a half of jug of coolant a day. My oil is clear, no smoke or water leakage coming from my exhaust pipe and theres no water on the ground. I have a new thermostat, coolant jug and flush but no luck. The overheating is getting worst. Could this be a head gasket problem? If so, which one of your products do you recommend?

        1. Markina-

          Yes, it is likely a head gasket issue that you experiencing. We recommend using the BlueDevil Head Gasket Sealer.

          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. BlueDevil will create a permanent seal.

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

          Thanks!

          -BDP

          1. I have a 96 mercury Sable no leaks on the ground, no milky substance, but there was a Lil white smoke not much after starting up after sitting for a couple months but cleared up no smoke at all now, but after driving the car for 15, to 20 min., it’s over heating coolant was low, topped off but like it stay at the same coolant level but while driving turn on heater n it seems to cool the car down…could this be head Gasket problem if so what product could I use or what do u suggest…please help thank u in advance

          2. Carl,

            Thanks for your question about your 1996 Mercury Sable. If your white smoke stopped and you don’t have milky oil it could simply be that your cooling system needs to be refreshed as you may have a clogged heater core or rust in your system. We would recommend using Blue Devil Radiator Flush (available here: http://store.gobdp.com/radiator-flush-00204/) to clean our your cooling system. Then add new coolant and replace your thermostat and see if that gets your operating temperature and heater back to normal.

            Thanks for your question!
            -BD Auto Pro

          3. James-

            If the vehicle starts to overheat it should be shut down. Normally, if a vehicle overheats prior to the recommended 50 minute idle being complete, it is an indication that the vehicle may have a leak that is larger than what BlueDevil is intended to fix.

            Thank you!

            -BDP

      3. Hi, just need to know if Blue Devil will work on a v6 diesel engine and how to relieve combustion pressure whilst product does its job….??

        1. Yes, the BlueDevil Head Gasket Sealer will still work when 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 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 us at 888-863-0426 with any questions.

          Thanks!

          -BDP

        1. William-

          Generally, the more quickly you lose antifreeze the worse the head gasket has become. Many times you will notice heavy steam out of the tailpipe, milkiness in your engine oil, or overheating. It will usually become very clear when a head gasket is severe.

          Thank you!

          -BDP

          1. that exactly what I found in my engine when I had a bad head gasket , milkiness in my engine oil, overheating.

      4. I have a 2002 Windstar Van. Started leaking coolant really bad
        We tried the kW Head gasket and Block repair. Flush the system and did everything by the instructions and didn’t work. Now the stream is bigger than ever. Already spent close to $90 dollars there is oil getting into the coolant. But as far as we can tell is not getting into oil. Any suggestion that will work?

        1. Reba-

          Unfortunately, based on your description it sounds like the leak has gotten to a point that is too large for what BlueDevil is intended and designed to fix.

          We recommend taking the vehicle in to a certified mechanic to be looked at and potentially repaired. The only solution may be hard part repair due to how large the leak has become and the fact that oil is entering the cooling system.

          Thank you!

          -BDP

        1. Scott-

          Thank you for your question. The BlueDevil Head Gasket Sealer is only intended for water/coolant leaks. Unfortunately, we do not manufacture a product for stopping oil leaks into the radiator. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      5. I have a 2006 chevy equinox that keeps overheating. Have put in a brand new thermostat and flushed the radiator and it still continues to overheat. Could it be a blown head gasket

        1. Julie-

          Thank you for asking about your Chevy Equinox. Based on your description, it is tough to say whether the vehicle is overheating because of a blown head gasket. We recommend taking the vehicle to a certified ASE mechanic and having the vehicle properly diagnosed.

          Thank you!

          -BDP

    1. Car never overheated or no white smoke or milky white substance in oil. Radiator hose popped off of radiator breaking connection on radiator. Radiator replaced and thermostat for good measure. Coolant system filled and air bled. While running car the with overflow cap on, hose got hard, build up of pressure and blew my cabin heater coil. Is this a head gasket issue and which one of your products would work to seal it?

      1. Fig-

        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.

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

        Thanks,

        BDP

    2. IN A DIESEL ENGINE I SAW HUGE BLACK SMOKE .LOT OF WATER LEAKAGING NEAR HEAD GASKET. SOME TIME LATER ENGINE SLOWELY DOWN AND FINELY STOPED,WHAT IS THE REASON?

      1. Sahadev-

        It sounds like you have an imbalance in the air to fuel ratio – too much fuel to not enough air. This means either too much fuel is being added to the mix or there’s not enough oxygen being supplied to burn the fuel.

        The most common causes of this are faulty injectors, a faulty injector pump, a bad air filter (causing not enough oxygen to be supplied), a bad EGR valve (causing the valves to clog) or even a bad turbocharger. Some of these are easy fixes while others may require you to visit a certified mechanic. We hope this helps.

        -BDP

    3. Ok.I added a new oil sendind unit to my car(2000 Malibu). Now Iam adding coolant to my car every week. What seems to be the problem?

      1. Lorraine,

        Thanks for your question about your 2000 Malibu. We would recommend trying to identify where the coolant is leaking. Our leak stop products cannot seal a leak in a bad hose so if you can find the leak coming from a hose, we would recommend simply replacing that hose. If you find the leak coming from a gasket, the radiator or engine block you can use BlueDevil Radiator and Block Sealer (available here: http://store.gobdp.com/radiator-block-sealer-00205/) to seal the leak.

        Thanks again for your question!
        -BD Auto Pro

    4. Hi I have a 93 honda prelude car doesn’t over heat. But I’m losing alot of coolant and adding alot of coolant every other day. and the reservoir tank completely empty. Under the car shows alot of coolant but it drys up never hits the ground no white smoke from exhaust pipe no signs of oil in the radiator or under the cap. Could it be head gasket?

      1. Neuda,

        Thanks for your question about your Honda Prelude. The leak you’re describing could be an external head gasket leak meaning the water is leaking out of the head gasket rather than into your engine’s cylinders. Usually, if this is the case you’ll notice steam coming from the head after driving for more than 10 minutes. If this is the case, we’d recommend using BlueDevil Pour-N-Go (available here: http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/) to seal the leak.

        It is also possible that the leak is coming from one of your hoses so it may be worth checking the condition of your radiator hoses and the hoses going to your heat core.

        Thanks again for your question!
        -BD Auto Pro

    5. there is white smoke coming from under the hood an it jerks an sputters an dies an i dont know what is wrong with my van its a 99 murcury villager

      1. Chasty,

        It sounds like you’ve got a big coolant leak and possibly some other problems. Your car probably is not safe to drive the way it is so we would recommend having it towed to a mechanic for a diagnosis. If you decide to do the work yourself, we would recommend letting the car cool all the way down, popping the hood, then starting it and seeing if you can find the coolant leak quickly. If you can get that fixed quickly, you may be able to have better luck diagnosing the rest of the problems you’re having.

        Thanks for your question!
        -BD Auto Pro

    6. Hello,

      I’ve witnessed the following symptoms with my engine:

      -an overheating engine
      -significant loss of cool with identifiable leak

      No:
      – coolant leaking externally from bellow the exhaust manifold
      -milky white discharge in my motor oil (not a lick),
      -white smoke from the exhaust pipe
      -bubbles in the radiator or coolant overflow tank

      will this product be able to solve the following problems?

      1. Ian-

        As long as the vehicle will idle for a full 50 minutes without overheating or stalling out and will not lose more than about 1 US quart of water during a 50 minute idle then there is a great chance that BlueDevil Head Gasket Sealer will work.

        Thank you!

        -BDP

    7. I have a 02 Dodge Ram 1500 with 97,000 miles on it and it’s been a good truck up until now. I first noticed it lacking power. Then came the check engine light. Now 3 days later I noticed a lot of white smoke and it running extremely rough! So I’m almost certain that’s it’s the head gasket… Thoughts…?

      1. Joe-

        Thank you for asking about your Dodge Ram 1500. 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.

        Thank you!

        -BDP

      1. Rosalinda-

        Yes, the BlueDevil Head Gasket Sealer is compatible for use in your Ford Expedition. Feel free to contact our technical support line at 888-863-0426 with any other questions.

        Thank you!

        -BDP

    1. You must be able to maintain a 50 minute idle for the product to work correctly. If you need further assistance please give our tech line a call at 1.888.863.0426.

      -BDP

  2. Ford 2006 F-250 turbo diesel that is loosing coolant antifreeze maybe 2-3 cups per 200 miles but pulling a 5th wheel camper. does not overheat but I am concerned of a head gasket problem?

    1. The leak could be coming from anywhere within the cooling system. I would diagnose the issue as a head gasket leak prior to installation but, if you are definitely loosing coolant, BlueDevil Head Gasket Sealer would be the appropriate product.

      1. Lucas-

        Yes, it sounds like you have a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer. To ensure best results you should change your oil before and after the BlueDevil process.

        -BDP

  3. To continue waiting on your response and maybe not related but puzzling, I live in Miami, Fl. and we seldom use the heater, if ever. In trying to adjust idle problem, I tried tweaking and adjusting the Throttle Position Sensor but had no success in many attempts. I then tried turning on the heater and let it run for a few minutes at 1200 RPM. The idle was fluctuating. The engine started bucking and jerking. Saw smoke rising from the engine that smelled of something burnt… Then, then, then the engine started smoothing out and started idling much better and not wanting to die out.

    ??? How can turning on the heater do this? Trapped air bubbles??? WHAT???

    Cat5

    1. I would advise taking your car to someone certified that can look under the hood… It seems like you have more things going on then normal it would be difficult to diagnose online.

      -BDP

      1. My car overheats but needle only goes a lil over half on gauge. No smoke no water in oil. Maybe every 2days have to add water to radiator. What seems to be problem?

        1. Walter-

          It is very possible that you have a blown/leaking head gasket. The fact that you are losing coolant says that there is definitely a leak within your cooling system whether it be a bad head gasket, leaking heater core, leaking freeze plug(s), or a cracked block.

          We recommend adding the proper amount of the BlueDevil Head Gasket Sealer. This will help stop the coolant loss and in turn prevent your vehicle from overheating.

          Thank You!

          -BDP

  4. I was driving my car quite a lot today and when I turned it off I could head bubbling in my radiator. Also I noticed that there was a thin line of liquid along the front of my engine between the cylinder head and block. My coolant level has been reducing slightly over the past few months and I always top it up. There isn’t any white smoke from the exhaust or doesn’t appear to be an cloudiness in the oil. Do you think this is a head gasket problem? Is bluedevil a solution to this problem. Thanks

  5. Long story short- radiator blew 3 years ago. Put a stop leak in (don’t remember what kind). Replaced radiator. Overheated die to blown hoses. Replaced hoses. Overheated again. Noticed that coolant had what looked like oil on radiator cap. Replaced blown hose and flushed system. Problem seemed fixed, until yet another hose blew. Sludge came back. Seems to be symptom of blown head gasket, but no white smoke from trail pipe, no overheating, no coolant loss, and no bubbles in overflow. Cause of the problem? 97 civic. No coolant in oil. Suggestions?

    1. Nicole-

      It sounds like you are getting oil pushed into the coolant. The BlueDevil Head Gasket Sealer is made specifically for coolant leaks. Unfortunately, we do not manufacture a product that will stop oil from entering the coolant.

  6. I have a 2005 ford f350 6.0 diesel I already replaced the STY headbolt with studs. I am getting pressure which is causing puking only under high boost. I have checked pressure with a gauge and am sure it is coming thru my head gasket, will blue devil repair this problem as its pressure out of the combustion chamber into my coolant system?
    Thanks
    Mike

    1. Mike-

      We would not recommend using the product in your Ford Diesel. In situations with a gasoline engine we would recommend pulling the spark plug from the effected cylinder to relieve some of the pressure blowing into the cooling system. However, because diesel engines use glow plugs you will be unable to use that method.

      Feel free to contact us at 1.888.863.0426 with any further questions.

      1. All I have is a small coolant leak, I was moving my car at school and ran it on a cold start, what could be the cause to the leak? The leak is dripping somewhere under my Timing Belt, I have a 1991 Mazda Miata.

        1. Joshua-

          It is likely that your water pump is leaking. You should first have the water pump check out and if it turns out it is not leaking then it is possibly a head gasket leak.

          If the Mazda is diagnosed with a head gasket leak then we recommend using 8 – 10 ounces of the BlueDevil Head Gasket Sealer.

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

          -BDP

          1. I have a 2003 Montero Mitsubi tshi that is leaking coolant fast I have tried blue devil permanent sealer once should I have it done again. It stop but start back leaking about 3 weeks later thanks

          2. Barbara,

            Thanks for your question about your Montero. We would recommend you try calling our technical support department at 888.863.0426 to give them the details of your leak so they can help you know where to go from here.

            Thanks again for your question!
            -BD Auto Pro

  7. I have a 2004 Pontiac grand am it starts up up I think I have water leaking into my engine the oil is milky will this product still work???

    1. Adrian,

      Yes, our product will work for the situation you described. I would change your oil before AND after the application.

      Please feel free to give our tech line a call if you have any questions. 1.888.863.0426

      -BDP

          1. I drive 30 miles to work and my temp. gauge moves about a 1/4 of an inch heat not as hot as it once was,when I get home the engine is hot, hoses are hard,every 2 or 3 weeks I have to add about a 1/2 quart of coolant, engine lite is on, reads temp. sensore which no one can locate could this be a head gasket problem thanks h.logins

          2. Harold,

            Thanks for your question. It’s possible that you’ve got a blown head gasket, but it sounds more like you’ve got a blocked heater core and maybe a slow leak because of that. We would recommend starting by performing a very thorough cooling system flush. Start by draining all the fluids and removing the thermostat. Remove the hoses going to your heater core and try forcing some water through using a garden hose. Try this both directions until the water flows through easily and comes out clear from both directions. Then use BlueDevil Radiator Flush (available here: http://store.gobdp.com/radiator-flush-00204/) to flush your cooling system. Replace your thermostat and refill the system with coolant and see if that gets your heat and operating temperature back to normal.

            Thanks again for your question!
            -BD Auto Pro

  8. I have a 2000 Olds bravado that I just bought. Noticed the other day that the coolant was leaking, my son added more coolant, leaked out again, seemed to overflow. My son replaced radiator, but still coolant leaks. Temp dial showed upwards of 260, drove it home, hood was hot, sounded thing things boiling, my son drained all coolant, then replaced radiator. Temp still very high, what should I do.

      1. Hey I have a 2004 Dodge Ram 1500 4.7L and it was running fine no problems but but the oil was milky and a mechanic recommended fiber lock to me so I bought it and added it and followed the directions but ever since my truck has been overheating. Why could that be!

        1. Austin-

          Thank you for asking about your Dodge Ram. Based on your description, the cooling system may be clogged or restricted with particles from the previous product you had used. We recommend having the cooling system flushed with our BlueDevil Radiator Flush, found here: http://store.gobdp.com/radiator-flush-00204/ . The Radiator Flush services systems up to 3 gallons, so you would need 2 bottles for your vehicle.

          Hope this helps!

          -BDP

  9. My Jeep was towed to the automotive shop because it was overheating nine days later after they replaced the radiator.Prior to the radiator being replaced, I had a remanufactured air conditioner installed in my Jeep. While driving with the air conditioner on, my Jeep overheated and radiator fluid spilled all over the ground. I immediately parked it and turned off the engine. The tow truck driver said he did not find that the radiator had any leaks in it or even in the hoses. After my Jeep was at the shop for over 2 weeks, the shop told me they fixed the overheating problem with a sealant. How do I know if a gasket sealant was actually put in my Jeep Liberty? When the automotive shop picked me up in my vehicle, he did not have the air conditioner running and I asked why the air conditioner was not on, he said he liked to drive with the window opened. I reached over and turned on the air conditioner and the Jeep seamed to be running rough. By the time I dropped off the tech at his business and was driving home, the Jeep overheated. The automotive shop told me my vehicle was fixed with a sealant. The shop that has it now told me it overheated because of the fan was not working.

    1. Janet-

      Depending on which product was possibly used it may be very difficult to determine whether or not a sealant was ever added to the system. Many of the products out there would not necessarily be traceable after application.

      Feel free to contact us with any further questions.

  10. I have a 1995 oldsmobile cutlass supreme 3.1 v6. Was in the drive thru the other day and cars temp. Starting rising and I smelled antifreeze. I pulled over opened the hood and it was dripping from water pump. Replaced water pump but the is still a stream of antifreeze leaking from side of the block. Would blue devil be a choice in my situatuon?

    1. I have a 2004 Infiniti fx 35. When am accelerating on highway,the heat gauge goes up to over 3/4. The coolant reservoir gets filled up with coolant which is boiling and spilling over . Car does not overheat in traffic or when am driving at low speed.What could be the cause ?. Just replaced the radiator but the problem persists.

      1. Mike-

        Thank you for asking about your Infiniti FX35. 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.
        Due to 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

  11. I have a 98 Ford Expedition Eddie Bauer 5.4 engine,4×4,first I noticing when I try to start it it takes maybe 3 or 4 attempts,when it does finally start I notice white smoke from the exhaust with liquid leaking also,the oil cap has a milky substance,I’ve noticed the anti freeze is real low and bubbly I also hear a ticking sound when it idles,do you think its the head gasket and how great of a product is BLUE DEVIL HEAD GASKET SEALANT??? The mechanic said it would cost about $1400 to fix a blown head gasket is that the going price???

    1. Derek-

      It sounds like your head gasket leak is fairly extreme. In order to use the BlueDevil your vehicle needs to be able to maintain an idle for a solid 50 minutes without stalling out or overheating. If it can do so then we would recommend trying the BlueDevil Head Gasket Sealer.

      Feel free to contact us with any questions.

  12. It takes my car five to six time to crank and its starts with a rough idle then it smooths out. I took it to the place and put it on the computer and the codes were cylinders 3 4 5 6 misfire and bank 2 sensor 1. And i have a slow coolant leak. A mechanic told me that i have a head gasket leak cause white smoke was coming out when the gas was pushed. Will a head gasket cause it to have a hard time cranking? And make it jerk, and spotter and give those codes? Should i try the blue devil?

    1. Jeff-

      It sounds like you may have some additional issues beyond a blown head gasket that is causing these symptoms in your vehicle.

      In order for a head gasket leak to have any effect on the vehicle being able to start it would have to be an extreme leak or multiple leaks causing a great amount of fluid to foul out the spark plugs.

      You may want to have a professional re-diagnose the problem or problems at hand so that you may make an educated decision what your next step should be.

  13. I have a 1997 328i bmw
    It overheats, there’s no smoke from exhaust but there is smoke coming from the valve cover area that seeps through the inside of the car. I replaced the fan that had a few missing blades from a loose shroud. But it still overheats.. I do see a little oil leak around Valve cover..

    1. Kenneth,

      We would suggest having the vehicle diagnosed by a professional so that you are able to determine what is causing the overheat. A defective fan switch, fan clutch, clogged or restricted cores, heavy scale and sediment deposits, or systems jellied from old antifreeze are some of the possible reasons you are overheating. Once you have determined the cause you will be able to make an educated decision on what the next steps should be.

      -BDP

  14. I have a 2000 mazda mpv losing coolant but no signs of a leak was running hot till I changed thermostat and radiator cap now just losing coolant will empty entire reservoir within 2 miles

    1. Peter-

      In general, as long as the vehicle will not lose more than 1 quart of water during the 50 minute idle then you should have no problem sealing it. The fact that your reservoir is emptying within a 2 mile drive leads us to believe that it may lose more than 1 quart during the recommended 50 minute idle. You may test it but it sounds like the Mazda may need a hard part repair.

      -BDP

  15. After a radiator replacement my Volvo was blowing coolant vapor from the exhaust and there was coolant in the motor oil. I used a half bottle of Blue Devil yellow label, changing the motor oil before and after, and the white smoke has stopped but there is still some coolant leaking into the oil. Should I attempt a second treatment?

    1. Tim-

      Yes, we recommend running the exact same process, including changing oil before and after, a 2nd time. This should take care of the leak that remains.

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

  16. I have an ’06 Dodge Charger 3.5 that’s been overheating. Radiator cap was pressure tested and no leaks were found. Replaced thermostat, but still having an issue. Car will sit at idle for 2hrs and temperature stays normal. After driving for about an hour it runs hot. No white smoke from tailpipes. No leaks. Fans are working properly. Car doesn’t run rough, nor does it ever have a cranking issue. Any suggestions, and should I this product?

    1. Tony-

      There are a number of different things that could cause a vehicle to overheat. You may want to have your Dodge further diagnosed by a professional so that you are able to pinpoint the cause of it overheating. Once you are able to do so, you will have a better idea on what your options are.

  17. When I was getting a different repair, the mechanic informed me that the head gasket in my 07 Subaru Legacy was leaking.

    I bought the blue devil product (blue/yellow bottle) but I don’t currently have any of the above symptoms of a blown head gasket.

    Should I use it anyway?
    Will it repair the leak that appears to be in the early stages?

    1. Matt,

      If a certified mechanic has diagnosed your Subaru with a blown/leaking head gasket then the BlueDevil Head Gasket Sealer would be appropriate to use at this point. BlueDevil is more effective on leaks that are caught in the early stages as opposed to a leak that has become extreme.

      We would recommend the use of our product for your Subaru. Keep in mind, you will only need to add 16 ounces into your cooling system.

  18. Need some help here, I’ll try to be brief.

    1999 Camry, 4 cylinder with 180k miles overheated about a year ago. I changed the radiator because I saw visible cracks in the top. Problem solved for about one year.

    I recently drove about 4 hours non-stop on a hot Florida summer day, on the return trip the car overheated and stalled hot. I may have been too hasty in topping off with water and regretfully added it to the engine while it was still hot (I was running late and wasn’t thinking).

    Soon afterwards the check engine light came on, read it as “cylinder 3 misfire”, car developed a rough idle that felt as though the car would stall but the car ran smooth above 10-15MPH. Took it to a mechanic, they changed all spark plugs and coils saying that was the cause. Problem not solved. Brought it back, they changed out the EGR valve and solenoid. Still not solved, actually worse rough idle.

    After these repairs the car overheated within about 30 minutes of driving and overheated within 20min after topping off coolant. I removed spark plugs and discovered green coolant on the plugs and coolant on the oil dipstick. I have not driven the car since.

    I removed the thermostat and found it to be brown/rust colored but I otherwise found it unremarkable. I don’t know what it would look like if it failed. I do not know if there is white smoke out of the exhaust, however, there was white vapor coming out of the oil cap when I removed it.

    Is your product indicated here? Is there further investigation I should do? If your product is indicated, should I change oil before and or after using your product? Anything else I should consider?

    Thank you

  19. My 95 acura integra ls v tech has overheated on me twice(I was using water and no type of coolant/antifreeze. Once because a water pump blew, and the second time the radiator reservoir would become extremely hot and cause the engine to stop. I flushed the system, replaced the pump, and even replaced the thermostat and topped it with coolant. After this my car turns on but works at very low rpms and it seems like it’s about to die out, and huge puffs of white smoke come from the exhaust. I also notice some tiny spits of water coming from the engine, possibly the head gasket. So I’m guessing the head gasket is cracked, would this product help me out?

    1. Javier-

      As long as your vehicle will be able to idle for a full 50 minute period without stalling out or overheating then the BlueDevil Head Gasket Sealer would be a great solution for repairing your Acura.

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

  20. If my fan is running on low speed do I need to fix that first before using your sealant that I bought? I have a 02 Jeep Cherokee 8 cylinder.

  21. I have a Hyundai Galloper (engine Mitsubishi 2.5l Diesel). Replaced head 2-3 years ago. Then replaced head gasket about 1 year ago (faulty work installing new one?). All OK for many months. Then Turbo went out. Replaced about 3 months ago. All of a sudden (this week), car overheats, water goes from radiator to reservoir. Could your product help?

    1. Tom-

      Based on what your description, 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. 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.

      -BDP

  22. I have a 2002 Oldsmobile alero an it was overheating so I got new resevor thermostat an flushed the radiator and it was still overheating now I got water an white smoke coming out of my tail pipe an car wanna turn off. I was using water not antifreeze because it would just spill out so my oil is watery not milky please help me What should I do.. thanks Christa

    1. Kendall-

      As long as your vehicle would be able to idle for a full 50 minute period then we would recommend using our product, the BlueDevil Head Gasket Sealer. You will want to change your oil before and after the BlueDevil process.

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

      -BDP

  23. So I just bought a ford probe and have been driving it for a week, no overheating or coolant loss. But a very small amount of smoke coming from the middle of the engine. Kept driving it. Then the other morning I drove it for 10 minutes not long enough to even warm up and it ran fine, got home, turned the car off and heard a light trickle and looked under my car to see liquid dripping. It dripped down and across the rest of my parking spot. It was neon green. There’s no coolant in my radiator now. And we poured water in and it leaked out and we didn’t drive it so I think it’s a radiator hose somewhere. But others say head gasket. Do you have an opinion? Would it hurt to use the blue devil stuff if its not a badbhead?

    1. Katie-

      You should not use the BlueDevil Head Gasket Sealer as a preventative maintenance. We recommend that you check all of the hoses and their connections to make sure the leak is not coming from a loose hose.

      If you do confirm that the head gasket is leaking then we definitely recommend using the BlueDevil Head Gasket Sealer.

      You may contact us at 888-863-0426 with any further questions.

      -BDP

  24. I have a 2005 Duramax diesel diagnosed with head gasket problems by 2 different shops. I loose a little coolant but no overheating. Help.

    1. Deb-

      You will not always experience the overheating symptom when you have a blown or leaking head gasket. Based on the fact that you are loosing coolant, our guess is that you are in the early stages of a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer to help remedy the problem at hand.

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

      -BDP

  25. I just bought a 98 buick century with the 3.1 v6. I have a slight suspicion there could possibly be oil getting into the antifreeze or vise versa. Also have a Heater core leak. But if there isn’t for sure a head gasket problem. Will hurt to still run a bottle of your product and if so which one?

    1. Cam-

      Unfortunately, the products that we manufacture for head gasket leaks will not work when oil is being introduced into the cooling system. The BlueDevil Head Gasket Sealer is made specifically to stop coolant leakage.

      At this point we recommend that you confirm whether or not oil is present in the cooling system. If you find out that it is not and you only have coolant entering the oil then BlueDevil will be a solution for you. Once you have had a chance to look further into your issue at hand please contact our tech support team at 888-863-0426 so that we may discuss a possible solution.

      Thank You,

      -BDP

  26. I have a 2006 Chevy Equinox and it keeps overheating, I have to keep the heat on to make sure it doesn’t overheat. There is ne white Cloud in my oil and there is no fluid on the ground under my car. Would this be from the Head Gasket?

  27. I have only babbles in the expansion tank of my yards verse diesel no overheating or smokes or even no leak in the coolant .should .i asked a tech.and he said i have problem with head basket.so should i use this product to stop the babbles. Thanks

    1. Sir-

      Please contact us at 888-863-0426 so that we may discuss your symptoms in more detail. We will be able to make possible suggestions to you so that you have success with our product.

      -BDP

  28. I have a 2005 Ford Explorer I just replaced all spark plugs and wires and radiator.. Lots of white smoke from tail pipe and codes are reading cylinder 4 misfire still after replacing plugs and wire…. A slight ticking /knocking sound comes from engine when first starting up then it idles down and goes away…. Not over heating and no leaks should I use sealant?

    1. It sounds like you are having a few different symptoms of possible engine problems. You may want to have a certified mechanic take a look at the car to diagnose the problem or problems at hand. Once you have a diagnosis you will be able to better decide what some of your options are to get the vehicle running smoothly.

      -BDP

  29. Hello..i have a 2003 buick rendezvous cxl…as right now im assuming that the vechicle have a blown head gasket…as its showing some sign…thick white smoke coming from the pipe..bubbling coolant on the reservoir..would this product will able to fixed the problem? Guaranteed?

    1. Vin-

      Yes, the BlueDevil Head Gasket Sealer would be a great candidate for sealing your leak. 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. 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.

      Our products do carry a 100% money-back-guarantee.

      Thank You,

      -BDP

  30. I have a 98 buick leaking coolant, and over heating at first I thought it was the radiator until I noticed the leak close to the top of the engine by the cap for the oil. (please excuse the crud wording Iam no where good with cars) The radiator is full but the resevoir seems to be empty anytime I check. Its leaking at an alarming rate now. All the hoses seems to be good. Iv only just head about a head gasket and seen that the problems are very similar.Please Help.

  31. I have a 11991 Buick regal car overheated because of lack of coolant filled it and car did not overheat but is still losing cool and it drips out on the front passenger side and now the heat is not working it blows out cold air coolant is not milky like and no white smoke but will a blown head gasket cause this and can I use the gasket sealer

    1. Channelling-

      Yes, we recommend using the BlueDevil Head Gasket Sealer. This should have no problem stopping your coolant loss.

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

      -BDP

  32. I have a 2000 Chevy Malibu we changed almost every thing on my car new radiator, O2 sencer, reservoir, thermostat n now it’s kicking out white smoke but no sign of water or coolant in oil could this b a blown head gasket if so would the blue devil gasket sealant work on my car oh n I do leaks my coolant from my car

    1. Michelle-

      Yes, your Malibu would be a great candidate for using the BlueDevil Head Gasket Sealer. The symptoms you have described are very common in the early stages of a blown head gasket.

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

      -BDP

  33. I have a 2003 pontiac grand am 3.4 litre .it over heated on my way home from a 80 mile trip , I was told it was a head gasket there was water in the oil , I flushed the cooling system and added bars gasket sealant did not work. also change the oil .turns out the thermastat was not opening .now there is water coming from the tailpipes , as much as I can put in the resivior , it just keeps coming out .will blue devil fix all this ?

    1. Reuben-

      Yes, BlueDevil has worked in situations similar to what you are experiencing with your Pontiac. You will definitely need to flush the cooling system prior to starting the process. For best results, you should also change the engine oil before and after the BlueDevil process.

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

      Thank You,

      BDP

  34. I actually called your tech support about my 2003 pontiac & I was told it will not work .now who shouldI believe ? As I said the car starts but does not hold the water or coolant. It just spits it out the tail pipes .so will it work or not ? ( Reuben )

    1. Reuben-

      The vehicle must be able to idle for a full 50 minutes without stalling out or overheating in order for this to be able to work. The vehicle also should not be losing more than about 1 quart of water during the 50 minute run or you will be losing the product to quickly. Based on your description, it sounds like you may have a leak that is too extreme.

      -BDP

  35. I have a 1995 Volvo that has had an oil leak, i have just been watching it by checking the oil levels. Today i noticed white milky in the oil. so it looks like the coolant is mixing with the oil. I have not been losing much coolant, just oil and the car runs great. Is your product a good choice at this point to use?

    1. Teresa-

      It sounds like you may have a couple of different leaks going on with the vehicle. The BlueDevil Oil Stop Leak will help stop the oil loss.

      The coolant getting into the oil may be a head gasket leak. For this, you may use our BlueDevil Head Gasket Sealer; you will want to change the oil before and after the process to ensure best results.

      Please contact our tech support team at 888-863-0426 with any further questions.

      Thanks,

      -BDP

  36. I have an 03 jag s- type 4.2 v8–my car runs roughly no water in oil no white smoke not sure about tail pipes if it does very little i am loosing coolant about a 3-4 quarts on a drive . i took to mechanic he said i was loosing compression on 3 cylinders on same side ? said it COULD be a blown head but wasnt definite he would have to tear deeper into block. is my car a candidate would it hurt to use if its not a blown head

    1. Trav-

      As long as you will not lose more than about 1 quart of coolant/water during a 50 minute idle then BlueDevil would be a great option for you. If your car is losing more than that then you may need to look at getting the hard part repair.

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

      -BDP

  37. My 91 Silverado has all the symptoms of a blown head gasket (white smoke exhaust, bubbles in reservoir, water in oil, overheating) but overnight my coolant system is maintaining pressure. If I actually had a blown head gasket, would it not lose pressure? Possibly something more serious like cracked head?

    1. Tim-

      In some instances the cooling system will still maintain pressure even if you have a blown head gasket; it is also a possibility that the head is either warped or cracked. Based on your symptoms we recommend that you use the BlueDevil Head Gasket Sealer to help repair your vehicle.

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

      -BDP

  38. I just got an oil change and they said my oil was leaking behind my engine and that I needed a new head gasket. Can I use this sealer to fix the problem?

    1. Tamara-

      Unfortunately, we do not manufacture a product that is intended to stop leaking oil from in or around the head gasket. We hope you are able to find an easy solution.

      All The Best,

      BDP

  39. I have a Nissan 2006 Altima I opened the hood a couple days ago realized I was low on oil and the coolant overflow tank was almost empty. I put in 3 quarts of oil & filed the overflow tank to the MAX line. The next day white steam or smoke started to come out of my exhaust pipe. I checked oil stick and oil cap no sign of a coffee cream milky substance. I let car cool took radiator cap off cranked car to see if the cooling fluid would splash everywhere or at least bubble, but It didn’t. My check engine light comes on and goes off every other month and my car has never overheated. The white smoke doesn’t smell sweet if I put my hand up to the exhaust it actually does smell like steam and condensation is visible on my hand. Could this still be a problem with my head gaskets. A mechanic told me that don’t worry its steam and that it will eventually disappear, but it hasn’t and now when I crank up my car I see a cloud and when I drive I see the smoke in my rear view mirror. Will Blue Devil Pour n Go fix this white steam/ smoke problem?

    1. Wendy-

      Yes, it sounds like you do have a head gasket issue. We do recommend using the BlueDevil Head Gasket Sealer to repair this problem. You will want to change the oil before and after the BlueDevil process to ensure best results.

      Feel free to contact us with any questions.

      Thanks,

      -BDP

  40. I have a 1996 Honda Accord 2.2L. My coolant leaks out only into the coolant overflow. Seems to be pressure from the cylinder coming into my coolant and forcing it out to the overflow. I have all new; radiator, all hoses, and radiator cap.
    Will Blue Devil work for me and how?

    1. Alvin-

      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. 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 at 888-863-0426.

      Thank You,

      -BDP

  41. 98 jeep Wrangler 4WD 6 cyl, 4.0 L. After witnessing white smoke shooting from the coolant reservoir, I filled up on coolant and drove it to get some more but had to stop every 20 yards because it would overheat. When i got home, the coolant was at the same level. I hear bubbling from within the radiator and leaking liquid from both sides of it. I wouldn’t say its milky but a light brown color. If there was white smoke coming out of my exhaust, I didnt notice. Im hopeing its something that i can fix like a thermostat or radiator or even the gasket and not a crack cylinder head.

    1. Estevan,
      Thanks for your question about your Wrangler. It is possible that you simply have a low coolant level and a lot of air pockets in your cooling system. If you can, try starting your jeep and letting it idle on a hill so the radiator is at the highest point. Leave the radiator cap off until your jeep warms up and add coolant as the air pockets bubble out. Make sure your jeep doesn’t overheat while you are doing this, and if your radiator starts to overflow, stop the engine and let it cool down before starting it again.

      The symptoms you described do sound like you have a blown head gasket. If your vehicle is overheating and the coolant reservoir and radiator are full, that is usually a pretty good indication of a blow head gasket. You can go to your local auto parts store and pick up a blown head gasket tester. These tester will test for the presence of exhaust gases in your coolant, and will give you a positive indication of a blow head gasket. A cracked head is possible but if you didn’t let your jeep over heat for long, it is unlikely as the 4.0L Jeep motor is a well build motor.

      If you do have a blown head gasket, you can use BlueDevil Head Gasket Sealer to seal your head gasket leak and get your jeep back on the road. You can purchase BlueDevil Head Gasket Sealer, and read instructions for use here: http://bit.ly/ZtUkim.

    1. Tim-

      You can still use BlueDevil in cold climates. If you do it when the outside temperature is below freezing you will want to be sure to drain your cooling system, after the BlueDevil process is complete, and refill with antifreeze.

      -BDP

  42. Hi I have a Pontiac grand prix 2001 with 160,000+ miles. About 2 weeks ago I got 2 new front tires once I got the car back the check engine light was on for 2 days I thought it was jus because they lefted it up wrong or something cus it went away. Then about 4 days ago when I would come to a full stop and then press the gas the car would rrrrr until I slightly yake my foot off the gas then press again then it would go. Then yesterday the light came on for low coolant but stayed on for a minute and went off. Can you tell me whats going on with my car?

    1. Brown,

      Thanks for your question about your Pontiac Grand Prix. The first step in diagnosing the problem would be to have the check engine light read so you can see what your car thinks the problem is. Many local auto parts stores will do it for free and give you an error code that hopefully will lead you to the problem for the “rrrrrr” when you first start off.

      The low coolant light flashing on probably indicates that your coolant level is getting low and as it sloshes around while you are driving and uncovered the level sensor. If you pop your hood you can check for a low coolant level in the coolant overflow bottle. The bottle is in the back, passenger side of your engine compartment near the alternator. If you have a low coolant level, add the manufacturer’s recommended coolant until it reaches the “cold” full mark. Your coolant level is likely low due to a leak, so consider adding BlueDevil Pour-N-Go Head Gasket Sealer to your vehicle’s cooling system when you add more coolant. BlueDevil Pour-N-Go Head Gasket Sealer will seal a leak in your vehicle’s cooling system quickly and easily so you don’t have to worry about low coolant again.

      For more information about where your vehicle’s coolant is leaking from you can read our article about coolant leaks here: https://www.gobdp.com/blog/car-coolant-going/. If you have any further questions you can leave a comment on the bottom of that article.

  43. I have a 96 Ford Taurus with the 3.0 engine that is overheating. I’ve replaced the radiator (was leaking) thermostat and am getting ready to replace what appears to be a working water pump (suggested by mechanic). I don’t see any milky residue in the oil, but do see some pale white exhaust when running. I see no coolant leaking anywhere. Would your head gasket sealer product work, and if so, which one should I use. I do need to be careful and not remove the thermostat again as I just had the bolt hole re-screwed due to stripping. Thanks in advance!

    1. Kelly-

      If you are trying to prevent from having to remove the thermostat then I recommend using the BlueDevil “Pour N Go” Head Gasket Sealer. Based on your symptoms, you should have no problem sealing it with this product.

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

      -BDP

  44. Why does the radiator on my 1985 Toyota Truck, 5 speed manual tranny, 22 RE motor have some oil in it. No water or milky oil when I changed the oil, no other problems with the truck, just some oil in my radiator…….

    1. Fred-

      The most likely cause is due to your intake manifold leaking. Unfortunately, we do not manufacture any products that are intended to stop oil from entering the cooling system.

      We recommend taking your Toyota into a certified mechanic at this point.

      -BDP

  45. Just brought a 2006 Hyundai Tuscon from a private owner. My girlfriend was on the way home and the vehicle overheated and went dead on her and there was white smoke also. This was no coolant or water in radiator so I waited for it to cool down and put some in there when I did there was a leak coming from the bottom of the vehicle and it would not crank. I jumped it and it cranked up and on the way home the temperature never went back up it stayed normal but the engine was making a funny sound it sounded like a diesel truck now. Is this a head gasket issue or something wrong with a hose or connection?

    1. DJ-

      It sounds like it is a head gasket leak but now that the vehicle overheated to that degree you may also be dealing with some additional issues as well. It sounds like you are losing coolant fairly quickly considering the cooling system was empty when you checked.

      You may be able to use the BlueDevil Head Gasket Sealer but we first recommend you take the Hyundai into a specialist to have it further diagnosed. You may need to address some of the other issues prior to being able to use the BlueDevil. In order to use the product the vehicle should be able to idle for a full 50 minute period without stalling out or overheating.

      Thank You,

      BDP

  46. I just noticed the coffee look in my oil. The 06 Saturn Vue 4cyc never ran hot. Sooo I got the Blur Devil oil thermostat n oil filter. Its jan will correct it or put a bandaid on it and buy another car asap.

    1. We recommend using the BlueDevil Head Gasket Sealer to help repair your Saturn. You will want to change the oil before and after the BlueDevil process to ensure best results.

      Thank You,

      -BDP

  47. I was on my way home the other day and I heard a loud pop come from my engine area. I had replaced the radiator cap the day before. I noticed my car(1994 acura legend ls with a 3.L V6) started to produce steam from the engine bay area and realized it had come from the radiator cap. The overflow tank is still full. Something else I had noticed was the car was idling high in park. Is it ok to put the pour n go head gasket sealer as a preventative measure? Also it is cold enough to get confused between the cold and actual white steam from the exhaust. So I am unsure if it is or not.

    1. Kyle-

      We recommend taking the Acura into a certified mechanic to have the vehicle further diagnosed prior to adding anything into your cooling system. The BlueDevil “Pour N Go” really shouldn’t be used as a preventative measure but only when you know you have a blown head gasket or coolant leak.

      -BDP

  48. I have a mercury villager 98. it has light white smoke and a liquid leaking from the muffler. I know the flex pipe has a whole in it so I will be taking it to the shopto be welded but there is still a cloud of white smoke coming from the whole in the flex pipe so could that be a blown head gasket?

    1. Demetrious,

      Thanks for your question about your Mercury Villager. It does sound like you have a blown head gasket. The white smoke and liquid is from the coolant in your vehicle’ cooling system leaking into engine and being pushed out with the exhaust gases. For some tips on what to do with a blown head gasket, read our article about it here: https://www.gobdp.com/blog/blown-head-gasket/.

  49. My car is slowly losing coolant it doesn’t overheat but when I start the car 2 minutes later white smoke starts to come out the exhaust and after 5-10 minutes of idling it’s completely gone, and stays smoke-free while the engine is at the working temperature. I’m guessing it must be a crack in the head which seals itself when metal expands – will Blue Devil Sealant fix this problem?

    Another very important question about the procedure – once the initial 50 minute idling is complete, would it be harmful to let the engine cool down and then idle again for repeated 50 minute procedure with the Blue Devil sealant unflushed? (I’m hoping for a better seal as the white smoke only comes from cold start). Is there a risk for keeping Blue Devil sealant in the system for too long (let’s say overnight)?

    At the end I’m going to empty the system (BD/water mixture) and refill with new coolant / reinstall the thermostat.

    1. Domas-

      Yes, we would recommend using the BlueDevil Head Gasket Sealer based on your symptoms. After the 50 minute idle is complete you should allow the vehicle to cool down for at least 2 hours. Once it has cooled, it is not necessary to redo another 50 minute idle, the system should be sealed at that point.

      The only risk there would be to leaving BlueDevil and water in your system overnight would be if you live in a cold climate where temperatures will drop below freezing. If you are in a colder climate we advise that you drain the system down to add some antifreeze.

      Thanks for your questions!

      -BDP

      1. Thanks for the info.

        One more question – my car (Jeep Grand Cherokee 2004 diesel, European) has coolant expansion tank and also a radiator cap – which one should I use for pouring the BlueDevil in?

        Just curious – once the initial 50 minute idle is over and engine cooled down, is the BlueDevil in the system “spent” (effectless) at this point?

        1. Domas-

          You should add the BlueDevil through the radiator cap.

          After the 50 minute idle and cool down the BlueDevil process is complete and has created a permanent seal. It does not continue to have any sealing properties after that point.

          -BDP

          1. Long story short, I did followed the instructions to the letter, waited 3 hours for engine to cool then flushed out and filled with antifreeze, but it didn’t work..

            My main concern – with the thermostat removed, the engine only reached 120°F during the 50 min idle period, that seems very cold to me – could it be that the BlueDevil wasn’t activated because of the temp too low?

            What is the minimum temperature BlueDevil works?

          2. Domas-

            The engine needs to reach about 150 degrees. If it never got that hot then the chemical is still active and you can run it again, you may want to try running it longer so that it is able to achieve at least 150 degrees.

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

            -BDP

  50. I have a 1994 crown Victoria lx and there’s a tapping noise under the hood and when im pressing the gas. Any suggestions on what that could be?

    1. Kentae-

      Usually the noise is caused by one of two things, low oil pressure or a worn part. The first thing you should check is the engine oil level; if the level is low you will sometimes hear a clicking or tapping noise. If the oil level is low be sure to refill it to the proper level and you also may want to consider using the BlueDevil Oil Stop Leak as it is probably low due to a leak.

      -BDP

  51. I have a 2006 Chevy Malibu, someone told me I have a gasket head problem but reading the symtoms I don’t know if that’s the problem. When I drive it makes a sound sounding something like a remote control airplane especially when I pick up speed it gets louder. My steering wheel also shakes a little and I recently had an oil change they didn’t mention anything about the oil looking funny. Could it be a gasket problem as said?

    1. Thanks for your question about your 2006 Malibu! To start with we’ve got a great article about the symptoms of a blown head gasket so it would be a great place for you to start. You can read that article here: https://www.gobdp.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/.

      Depending on what kind of car you have, you may experience some, all, or just one of those symptoms. Most auto parts stores sell a test kit where you can test your coolant for exhaust gas chemicals. The only way exhaust gas can get into your coolant is through a blown head gasket, so that could tell you for sure.

      As for the noises you mentioned, usually blown head gaskets do not cause any strange noises, just the smoking or overheating. The noises you mentioned that change with speed sound like it may actually be a wheel bearing or CV joint problem. To get a little more information about front end noises and the causes, you can read our article about that here: https://www.gobdp.com/blog/steering-wheel-noise/.

      If you have any more questions please leave us a comment on the bottom of one of those articles and we will get back to you.

      Thanks!
      -BDP

  52. My 1986 Nissan Pick-up is overheating we changed the thermostat still overheating. now loosing water but cant see from where and engine is smoking white bubbles in overflow tank also.tried radiator flush also.Think blue devil pro will help?

    1. Carla-
      It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. We 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 unable to do a compression reading then you may simply pull all of the plugs and you should notice one of them having a white-crystal-like build up on it and/or it may appear 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 with any questions.

      Thank You for your question!

      -BDP

  53. I have a 99 ford ranger with a 4.0. I’ve been losing coolant and been having problems starting it when it sits for awhile like over night. On cold mornings I notice white smoke coming from the exhaust. Have a milky like substance around the oil cap. Does this sound like a blown head gasket? If the cylinder head is warped will ur product seal it?

    1. Joseph-

      Yes, this does sound like a blown head gasket. All of the symptoms you have described are very common when the head gasket is blown.

      We recommend using the BlueDevil Head Gasket Sealer; it will also work if the head is warped or cracked. More information about the product can be seen here: http://store.gobdp.com/head-gasket-sealer-38386/

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

      Thank You!

      -BDP

  54. I have a 2002 Ford Windstar LX just yesterday I noticed I started smelling coolant I looked under the hood and I didn’t see anything this morning when I drove the car I started smelling more coolant and when I open the hood I saw some smoke coming from under the hood but not the exhaust I also noticed that the coolant level within normal range and the car is not overheating there is no milky substance in the oil or around the oil cap is that a blown head gasket or something else

    1. Tracy-

      Due to the fact that you really aren’t experiencing any coolant loss at this point we do not recommend using BlueDevil. You may want to have a certified mechanic take a look at it to diagnose exactly what is going on with the vehicle. Once a diagnosis is made you will be better able to determine what you need and should do.

      -BDP

  55. I have a F150 that was occasionally leaving small 5-6″ circles of antifreeze on the ground, under the engine, passenger side. When I changed the oil I looked for antifreeze or milky oil. The oil was old but I saw no signs of antifreeze in it. The oil cap did have that milky paste at the bottom of it but I was told thats just condensation and its normal. I added a small bottle of another liquid stop leak to the coolant and the leaking stopped, no more wet spots appearing on the driveway overnight, but now the overflow bubbles and foams up. No smoke, no overheating (actually runs cooler than it should), heat works great, no visible oil that I saw in antifreeze, just lots of foam in reservoir. A mechanic said the antifreeze is contaminated and that the hoses might break if I flush it with the machine, but again he saw no antifreeze in the oil. He also said it passed a pressure test and that it might be a timing cover or head gasket but no way to tell for sure unless they take it apart. I’m planning on changing the hoses, flushing the system, adding all new coolant and changing the thermostat. While I’m doing this, does this sound like I should add Blue Devil head gasket sealer?

    1. Boss-

      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 in your F-150.

      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 additional questions.

      Thanks!

      -BDP

  56. My car overheating still after changing the water pump radiator coolant resivoir hoses and everything….I don’t know what else it can be…..is it a head gasket

  57. I have a 1999 Cadillac escalade and i’m pretty sure i have a blown head gasket. I have noticed a two or three drop leak of coolant at the bottom of my engine, and my car wont blow hot air. I have a 8 Cyl so when I use your sealant, after i remove the thermostat and flush it, do i replace the thermostat or just put the old one back on?

    1. Destiny-

      First of all, thank you for your interest in our product. After the 50 minute idle is complete you should allow the vehicle to cool down (at least 2 hours). Once it has cooled you may then re-install the old thermostat.

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

      Thank You!

      -BDP

  58. I have a 2000 Honda CVR and its been leaking oil. We thought it was my husbands car. I just found out the other day it was mine. There is oil around the valve cover gasket area. While driving it last night it lost power and I had to pull over and have it towed. Its now sitting in my driveway and hasn’t been looked at yet due to the weather being so cold. Some say its valve cover gasket and some say its a blown head gasket. Car hasn’t over heated but there is a lot of oil around the valve cover gasket. So am I looking at a huge amount of money for a blown head gasket or the smaller valve cover gasket. Oh and no white smoke. I just smelled a slight burning smell like rubber. Thanks for any help you may have

    1. Tracy-

      It is a possibility that the valve cover leak has caused oil to leak down onto the spark plugs or spark plug wires. If that is the case it may cause a misfire which would result in a loss of power. We recommend taking a look at the spark plug and spark plug wires to see if you notice oil anywhere. If so, you may clean the area and potentially change the spark plugs.

      Depending on the severity of the leak you could try to use the BlueDevil Oil Stop Leak to help stop the valve cover leaks; keep in mind you will want to address the spark plugs prior to doing so. You should notice results after about 100 miles of driving with BlueDevil in the system.

      We hope this helps!

      -BDP

      1. I got a guy to look at it and he said it was the timing chain …another guy said it was in the ignition system ….sigh …thanks for getting back with me …gonna have to send it to a shop and let them work on her

  59. I have a 97 accord that on about every other startup, goes through a 5-10 second very rough idle phase. I give it gas and it tapers off once I get it up to around 3,000 rpms. I was told this is because my coolant is leaking into the engine. They said they would have gone in to fix it, but if a part of my engine was warped then they could not put it back together and my car would be done for. With the amount of times this car has overheated, I did not want to try that. Does this sound like the head gasket or something worse, and has it gotten too bad to where this sea lent may not be enough? I’m just trying to get one more year out of this car. Thank you.

    1. Kris-

      Please contact our tech support team at 888-863-0426. We would like to discuss your vehicle in a little more detail so that we are able to better determine whether or not BlueDevil would be a possible solution.

      Thanks!

      -BDP

  60. im being told my head gasket could have gone but ive only got one of the above symptons. white smoke from exhaust.
    other symptoms are, losing power whilst driving, car idling at 15-1800 revs and white exhaust smoke. help!

    1. Emma-

      The symptoms you have described are often present when dealing with a blown head gasket. The reason you will sometimes notice a loss of power is because of antifreeze leaking onto the spark plugs or spark plug wires causing a misfire.

      We recommend using the BlueDevil Head Gasket Sealer to help repair your vehicle. Feel free to contact our tech support team at 888-863-0426 with any questions along the way.

      Thank You!

      -BDP

  61. Hi, daughter’s car engine light came on as she was driving. When the car is started, a little white smoke comes out, but not much. What will normally be the first sign of a blown head gasket?

  62. hi, i have an 04 Nissan Murano. it recently started blowing white smoke out the exhaust at any time of the day at the first and second start up of the day. 3rd and above it wont do it. my coolant levels do go down i have to top it off once a week. it goes down about a quarter inch to an inch inside the reserve tank. my oil is not milky, and i do not have an external leak. the smoke is completely white and smells like burned rubber (slightly). some one told me i have a pin hole size crack in my head gasket so i bought a head gasket sealer and that didnt work. it was not blue devil, it was “motor purr seal up metallic. im wondering if that product is just cheap and worthless or can it be something else. if you honestly believe it is my head gasket and blue devil can get the job done ill purchase it. i do not want to have to pull that engine out.

    1. Salvador-

      We received your blog comment in regards to the possible use of our product. We are not familiar with the “metallic sealer” that you have described in your post.

      However, the BlueDevil Head Gasket Sealer does carry a success rate of over 90% and we have had a lot of success in sealing head gasket leaks. The product carries a 100% money back guarantee if it is unable to seal the leak.

      You can view more about the product here: http://store.gobdp.com/head-gasket-sealer-38386/

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

      Thank You!

      -BDP

  63. I have a 1995 GMC Sierra K-1500 with a 350 v8. when I bought the truck it had 184,000 miles on the clock. I’ve changed the water pump twice and the radiator twice. The water pump within a three year interval and the radiator within a three year interval. Now it looks like the radiator has started leaking again. The engine oil does not look milky, nor does the truck burp out white smoke after startup. I do have what sounds like an exhaust leak on the passenger side but after changing exhaust manifold gaskets and y-pipe donuts it still has the exhaust leak. Does this sound like a possible head gasket issue?

    1. Mr. D-

      Yes, it definitely sounds like a possible head gasket issue. You may want to have the vehicle looked at by a certified mechanic to confirm the diagnosis is correct. Based on your description it is difficult to say 100% that it does or does not have a head gasket leak.

      Thank You!

      -BDP

  64. Hi I have a 99 Mercury Cougar, and it has been giving me problems with overheating. It seems to have a radiator leak and what I would assume is a leak in the head gaskets. The oil is sort of milky or clearish. I was told to replace everything but unfortunately I’m short on money. It has a 2.5L V-6 engine and I was wondering what should I use on it and how long such a product would last and if there is anything specific that would require me to remove any parts of such. Thank you very much.

    1. Goshua-

      Based on your symptoms we do recommend using the BlueDevil Head Gasket Sealer in your Mercury. For best results, you should change the oil before and after the BlueDevil process. Once BlueDevil is able to seal the head gasket it creates a permanent seal.

      We manufacture 2 different Head Gasket Sealers; you may use either one. 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

  65. I have white smoke coming from my tail pipe with drops of water coming out of it. I have a funny smell coming through my heater vent, no over heating. The last time I got my oil changed they said there wasn’t any oil on the dip stick. I changed it 5000 miles before that oil change so I don’t know why or how that happened. The coolent was low but not extremely low, I replaced it and haven’t noticed it getting lower. Idk how to tell if your oil is milky. It’s a 2012 Chevy Equinox. Please help!!

    1. Tara-

      The oil is often described as looking like coffee with creamer if the coolant has leaked into it. Even though you may not have water in your oil it does sound like you are experiencing a head gasket leak due to the fact that you have steam & water coming from your exhaust.

      We recommend using the BlueDevil Head Gasket Sealer to seal the leakage. More information about the product can be seen here: http://store.gobdp.com/head-gasket-sealer-38386/

      Thank You!

      -BDP

  66. I have a 2008 Mazda 3 with 161K on it. I had odd issues throughout the winter with no heat in the cabin at idle. Occasionally the gauge would peg briefly, but the car was never really running hot. I have changed the t-stat. Needs coolant occasionally, but none in the oil. That being said I recently noticed a rough idle during cold start for about 5 seconds or so. I just pulled the plugs and found dampness (coolant) in 2 of the cylinders next to each other, that would be the cause of the rough idle until it burns off. So I am assuming I have a leaky head gasket. Will this stuff permanently seal it off?

    1. Rowdy-

      Coolant leaking onto your spark plugs can cause a rough idle. Based on your description it sounds like you are experiencing signs of a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer to help seal your leak.

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

      Thank You!

      -BDP

  67. ’06 jeep, had ovrrheating issues a year ago. Replaced water pump and never overheated again. Stuck in traffic engine did not overheat but Radiator blew out with a 7 inch crack across the top in the plastic. Any ideas?

    1. John-

      It sounds like your vehicle may be pushing combustion gases into your cooling system and thus causing an extreme amount of pressure. When you take the Jeep in to have the radiator replaced you may want to have the shop perform a “block dye test” to test for exhaust/combustion gases in your cooling system. If it turns out they are present then you should contact us at 888-863-0426 and we will be able to help you out.

      Thank You!

      -BDP

  68. i just brought a car and when i was checking the car over i noticed that where u put yhe water in 4 the radator there was some white creamy stuff is that a sign of a head gasket problem

    1. Darren-

      Normally, the sign of a blown head gasket would be seeing the white creamy substance when looking under your oil cap. You may want to check the oil to confirm whether or not it appears to be milky. If it is only on the radiator cap then there may not be any issue.

      -BDP

  69. I have a question. I have a 07 cobalt. When i start up the car in the mornings ill get some White smoke but small amounts and wont last too long either. Ive smelled that sweet smell from there. But it’s not too strong. Sometimes i have to get down to the exhaust tip and smell.. Ive been checking for coolant loss and even mark the reservoir with a marker.. No coolant loss at all. A bit of a rough idle and stops once the car is warm. After that the car runs fine.. Any help would be great. Thanks.

    1. Oscar-

      It is possible that you are seeing the early signs of a blown head gasket. However, because you are not experiencing any coolant loss then it is possible there is no problem at all. We recommend that you continue to check the coolant level to ensure if is not dropping. If it starts to drop then that would be an indication that you may have a leaking head gasket.

      If you are concerned about the slight steam/smoke in the mornings then you may want to have the vehicle looked at by a certified mechanic to full diagnose on whether or not there is currently a problem.

      Thank You!

      -BDP

  70. Question; I recently noticed oil on the funnel when I added a little coolant to my radiator. i thought it was odd because I had just changed the coolant. I had no white smoke ,and no milky substance in my radiator cap. One mechanic said it was a blown intake manifold gasket but only a slight failure. Another said it could be a blown head gasket or a blown intake gasket but “drive until it gets worse”. Now my oil pressure is high and check engine light is on. This is a 1992 3.8 Buick Regal with only 70k miles. The car still seems fine . No over heating ,No appearant loss of power I think part of the problem is GM made plastic gaskets and I put orange 50k coolant in it with last coolant change
    is the high oil pressure related to blown gaskets and which gasket?
    Will Blue Devil gasket sealer help?

    1. Robert-

      Unfortunately, BlueDevil is not intended to be used on vehicle where oil has entered the cooling system. The BlueDevil Head Gasket Sealer is specifically used for coolant loss or combustion gases pushing into the cooling system. It will work if there is water in the oil but not the other way around.

      Thanks!

      -BDP

  71. I have a Dodge Durango 4.7 2002 and its making the ticking noise! I’ve been told it’s the header or the gaskit. Just today as I pulled up on my drive way my car turned off on me? Can you please reply as soon as possible??!!

  72. I have a 94 Ford Explorer with a badly blown head gasket. Blows steam from head gasket, runs on 4-5 of the 6 cylinders, water in oil, water from exhaust, I’m doubtful your product will fix my vehicle what is the money back process if it does not work

    1. Darius-

      In general, as long as your vehicle is able to idle for a full 50 minute period without stalling out or overheating and will not lose more than about 1 quart of water/antifreeze during the 50 minutes then there is a very good chance that this will work.

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

      The product does carry a money back guarantee and if you have questions about it or need to exercise that option then you should contact us at 888-863-0426.

      Thank You!

      -BDP

      1. I’m sure it’s gonna overheat tho it heats up quick when it’s not moving. It won’t work if I have to shut the truck off

  73. Based on your list of symptoms, it seems pretty clear to me that there is a problem with the head gasket. When I start the car, the engine is pretty rough for a while. I feels like one of the cylinders is misfiring. The sweet-smelling white smoke is present, too. However, once I give it some gas (about 2-3 minutes of driving), the engine begins to run smoothly and the white smoke is no more. The car feels fine after it gets going, but on my ten minute drive to work this morning the temperature gauge was towing the red line (H). I’m planning on driving home today. It’s a two hour drive. If I can make it, I’m driving it straight to the dealership to get it checked out. Here’s a few quick questions: Should I even be driving the car? If I can keep the temperature low enough to not overheat, could it still do significant damage to the engine? Should I use the Pour-and-Go even though I’m taking it to the shop later today? Basically, if I can get it home without driving it into the grave, I’m golden. FYI, it’s a Honda Pilot ’06 with around 170k miles.

    1. John-

      You should be able to drive the vehicle without doing any further harm as long as you keep an eye on the temperature gauge and be sure to shut the car off if it begins to rise near the overheating zone. You will want to be sure you check the antifreeze level often and add water/antifreeze as needed.

      If you are planning on taking it in to the shop later today then there would be no need to use the Head Gasket Sealer at this point.

      All the Best!

      -BDP

  74. Used blue devil about 6 months ago due to suspicion of a bad head gasket no over heating for 6 months. Last weekend was driving a noticed that i was over heating no leaks new water pump and belt new radiator. I have a little white smoke hard to tell if it exhaust or steam its still cold in rhode island. I only over heat when i hit the gas when coming to a stop the car intently cools down. Opened the radiator cap there’s a slow bubble but no drop in coolent a slow decrease in coolent from the overflow nothing serious. Maybe a clog I dont know any thoughts?

    1. Caleb-

      It is possible that you simple have an air pocket in the system that needs to be relieved. We recommend bleeding the system down to remove any possible air bubbles.

      If you are still having the same issue after the fact then you should contact us at 888-863-0426.

      Thank You!

      -BDP

  75. My car is losing coolant in the radiator and its somehow overflowing the reservoir tank. There is no leak and the thermostat, fans, work properly. Could that be a head gasket issue?

    1. Jonathan-

      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. 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 at 888-863-0426.

      Thanks!

      -BDP

  76. now I have a 99′ suburban now I have been hearing the lifters when I hear that I know it means that the vehicle is running hot now I open the hood in check the oil was good in then I check the coolant it wasn’t any thing in there then I see a hole in the top radiator so I change it then I feel it up I idle it for about 30mins now two days later I finally drove the truck in I still hear the lifters now the coolant is reducing slowly with no leak I even check the hole I recently put on there is in good condition pressure is fill in good but its still running hot in I still hear the lifters now iam looking at the symptoms of the head gasket I have seen white smoke from the exhaust in coolant reducing slowly with no leak I want to know if this problem engages me to purchase the great blue devil product to fix the issue I have in will this product fix the problem permanently or temporary contact me asap at email or # 7734697030 if possible. thankx a million

    1. Tim-

      Yes, BlueDevil would be a great option to help seal your head gasket. The white smoke you are seeing from the exhaust is a tell-tale sign of a head gasket leak.

      Once the BlueDevil Head Gasket Sealer creates a seal it is permanent.

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

      Thank You!

      -BDP

  77. I just replaced the water pump on a 20-year old Olds last week. This week I noticed that the oil dipstick appeared a muddy-color.
    Probably a gasket problem.
    I have had to add coolant for about six months. I couldn’t see any water beneath the car.
    Obviously, adding a good water pump increased the water pressure that caused the old gasket to fissure.
    Do you have any ideas for me to get an additional year’s use out of the car?

    1. Richard-

      It is possible that you have a blown or leaking head gasket. However, based on the symptoms you have described it is very difficult to diagnose 100% one way or another. The muddy oil may simply be from the age of the oil.

      We recommend taking the vehicle into a local certified mechanic for a “tune up” and to diagnose any current problems. Having this done should allow you to address any problems and help keep the car running as it should.

      Thank You!

      -BDP

  78. Hi I have a 2002 95 Saab my car turns over but won’t start is this a sign of a blown head gasket and will your product work for this?

    1. Sade-

      Most likely you are dealing with something other than just a blown head gasket. You vehicle will need to be able to start and run for a full 50 minute idle, without stalling out or overheating, for BlueDevil to have a shot at working properly.

      Thank You!

      -BDP

      1. I know I need to do a flush and thermostat replacement when using your product. The question is, do I do this before or after applying the product?

        1. James-

          You would do a cooling system flush and remove the thermostat prior to using the BlueDevil Head Gasket Sealer. The thermostat will be left out for the entire BlueDevil Process. After the 50 minute idle, shut the vehicle off and allow it to cool down for a couple of hours (At least 2 hours). After the cool down, you can go ahead and install the new thermostat.

          Thank you!

          -BDP

  79. HI, was wondering if the Head Gasket Sealer im about to purchase is right for me.

    I just bought a 2003 Mercedes Benz Ml500 from an auction. I fired up the engine and i felt it shaking, it ran for about 5-7 minutes then i popped the hood checked the oil and the oil cap had milky resideu on it.. also i noticed that the water coolant compartment was boiling and was pumping out coolant?? . the shaking seemed to stop at higher RPM’s but i didnt want to risk it so im having it towed to my house instead of risking and doing further damage! i noticed that the car would have to idle for 50 minutes in order for it to fully work so what should i do??
    please help

    1. Philip-

      Please contact our tech support team at 888-863-0426 so that we may discuss the symptoms you are experiencing in a little more detail. Potentially you Mercedes would be a good candidate to use the BlueDevil Head Gasket Sealer in. In speaking with you over the phone we will be able to better understand the severity of the cars symptoms and can give you additional tips on how to use the product.

      Thank You!

      -BDP

  80. My mother has a 95 crown Victoria and it’s recently started to overheat suddenly while she drives it. No leaks, no white smoke, and no milky oil. Thermostat is brand new, but the issue is still there. Does the radiator need flushing or is this a possible head gasket issue?

  81. So when I was driving my turbo FR-S hard, coolant shot up on the passenger side windshield. I don’t have any coolant in my oil or any visible signs of leaks on the outside of the block. My guess is that putting so much psi through the engine would weaken the gasket causing the boost to pass into the coolant system making it pressurized and finding it’s way out through the over flow tank. My mechanic was telling me it’s happening because one of the two fans I have that doesn’t work is making the coolant too hot. I have noticed a small amount of bubbling in the over flow tank at around 212 degrees. Will this help?

    1. Aaron,

      Thanks for your question about your FR-S. It does sound like you are having a cooling problem and possibly a blown head gasket. In your FR-S has a stock thermostat opening temperature of about 185 degrees so your coolant should never get much warmer than that. If one of your fans isn’t working it could cause overheating. Just overheating alone could be enough to send coolant shooting out of your overflow tank so hopefully that is your only problem.

      The most reliable way to check for a blown head gasket is to test for the presence of exhaust gas chemicals in your coolant. This article will explain where you can get a test kit and how it works: https://www.gobdp.com/blog/signs-of-a-blown-head-gasket/.

    2. Aaron-

      Yes, we do recommend using the BlueDevil Head Gasket Sealer. 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.

      Thank You!

      -BDP

  82. losing coolant at very small rate i have a 92 cad Seville 85,000 miles , seems just to lose some coolant every once in a awhile had water pump replaced about a year ago seemed fine till i used heater and been having coolant loss since . No oil in radiator and no oil coolant that i can see, i keep thinking it head gasket

    1. John-

      If you are losing coolant then it is good possibility that you are in the early stages of a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer to stop the coolant loss and prevent the problem from becoming worse.

      Thank You!

      -BDP

      1. the upper radiator hose comes out of the radiator and dips down id say 6 inches
        may be more ,then heads back up to thermostat housing id say 8 to 10 inches , seems to me there would always be a chance of air bubble in there could that be .

        1. John,

          Thanks for your question about your radiator hose. It does sound like there would be a possibility for an air bubble to form in the location you described. Depending on what kind of vehicle its on, the coolant flow at high RPMS at operating temperature should enough to force the air bubble through the radiator hose into the radiator where it could escape through the overflow bottle. Also, as long as the bubble stays on the radiator hose side of the thermostat it wouldn’t be able to cause any damage to your engine.

          1. its just odd some days i drive and the coolant level is fine then some days it drops a bit …. maybe 1/4 cup its just weird

          2. John-

            Please contact our tech support team at 888-863-0426 so that we may discuss your vehicle in a little more detail. Once we have more information we should be able to make the best recommendation for stopping your coolant loss.

            Thank You!

            -BDP

  83. Hi my car has been running really rough so i replaced sparkplugs leads fuel filter fuel pump didn’t help so i did pressure test and cyliders 2 and 3 had low pressure would that be a head gasket ? Thanks

    1. Jake-

      If the cylinders are reading low then that is normally an indication of a blown head gasket. Give our tech support team a call at 888-863-0426 so that we can go over any other symptoms you are currently experiencing. Your vehicle may be a great candidate for using the BlueDevil Head Gasket Sealer.

      Thank You,

      -BDP

  84. I have a 2001 civic. It’s been diagnosed that I have leaking heads. My car is running good it’s just whn I drive it long distance like 60 miles it will start to over heat. If I use you’re product will it still work. I haven’t noticed any milky oil or anything like that. I’m confused.

  85. Loosing Antifreeze, not over heating, no white smoke or milky oil. Bubbles in overflow tank. Removed thermostat, Flushed system so clean water was flowing and added Blue Devil as recommended. Overheated at about 45 minutes. Let motor cool down and added water, Bubbles never went away, and overheated again. Never overheated before putting in Blue Devil, just lost coolant due to overflow. Car is 1994 Ford Explorer with a Ford Mechanic Rebuilt engine and less than 2500 miles on it. New thermostat and radiator cap. What gives?

    1. Joe-

      It sounds like your Volvo 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.

      Thank You!

      -BDP

  86. I have a 2000 Cadillac Deville and I believe it has a head gasket leak. I would like to try Blue Devil but the thermostat on the car is not in a position that me as a layman could handle removing. Is it possible to skip removing it and have the stuff still work for me? Or will it void the warranty/ guarantee on your bottle?

    1. Bernie-

      To avoid having to remove the thermostat, we recommend adding 2 bottles of the BlueDevil Pour-N-Go Head Gasket Sealer. This product does not require the removal of the thermostat and should work in sealing the leak(s) in your Cadillac.

      Thanks!

      -BDP

  87. I changed the oil and filter and after that white smoke and now over heats constantly. I tried stop a leak which helped with the coolant from leaking. Do I need a head gasket kit to fix my problem?

  88. would your pour and go sealant work on a V8 ? i see you said it would a 2000 cadillac i assume that has a V8 also

  89. 2004 alero Oldsmobile milky oil on dipstick. no loss of coolant. no loss of power. no Coolant leaking externally from bellow the exhaust manifold. no White smoke from the exhaust pipe. no Overheating engine. no bubbles in the radiator or coolant overflow tank
    and no Significant loss of coolant with no visible leaks. help.

  90. I have a 2005 4runner 6 cylinder Sport Edition. My check engine light came on, I got a “cylinder 4 misfire” reading from auto zone. I took it to my mechanic and he said it was not a coil problem and that after checking compression I had a gasket leak and he’s recommending a 3,500 dollar reconditioning of the top engine block…I’m not losing coolant, it hasn’t overheated, no milky oil, etc.. There IS a Tapping sound coming from the coolant overflow tank when I turn the car off from driving it. It taps fast at first and then slower and slower until this stops. Does this sound like a gasket leak and would I just buy the pour and go Blue Devil stuff in the radiator when the engine is cooled down? Doesn’t sound like I need to put 3500 bucks into it !? I AM getting ready to drive across country, so I’m worried.

    1. Greg-

      Based on the fact that you are not losing any coolant at all, we do not recommend using the BlueDevil Head Gasket Sealer. The tapping sound you are experiencing is not a normal symptom of a blown or leaking head gasket.

      We recommend having a certified mechanic take a look at it to properly diagnose the issue in your Toyota.

      Thank you!

      -BDP

  91. i have a 1999 gmc safari, it takes me 4 or 5 cranks for it to start, when it does start i have coolant leaking from the bottom of my van, sometimes a lot, while idling i do get white smoke and water out of the exhaust pipe, after refilling the radiator, it takes about 5 days for engine to start over heating having me to add coolant

    1. Steven,

      Thanks for your question about your GMC Safari. The symptoms you are describing do sound like a blown head gasket. The external leak you see dripping under your van could be an external head gasket leak, or another leaking component like a hose or water pump. Make sure you don’t drive your Safari if it is overheating and pick up a bottle of BlueDevil Head Gasket Sealer (available here: http://store.gobdp.com/head-gasket-sealer-38386/) to seal your leak today!

  92. I have a 2002 Honda Civic that has been overheating. I replaced the radiator and the thermostat. I had the coolant system checked for leaks and it’s not leaking. Just today on my way to work, the temp gauge started to go up and I pulled over and shut my car off. It would not start so I let it cool down for a few hours. I had just topped off my coolant about a week ago. After I let it cool down, I checked the coolant level in the resivior (it was full) but I did have to add some coolant to the radiator to top it off. I never see coolant leaking on the ground under my car, never see white smoke coming out of the exhaust, nor is the oil a milky color. Could I still have a blown head gasket because it will still overheat? It’s been almost a month since it last overheated and I try not to drive long distances or for long periods of time.

  93. I have a 2000 Ford Explorer 6 cylinder. It was overheating. I was told I need a freeze plug, then I was told thermostat housing was bad, then I was told water pump was no good. I’ve had all those replaced. Now I’ve noticed white smoke from the exhaust. my coolant reservoir keeps getting low with no visible leaks. the temperature begins to move over to the “H” but then drops back to level. I’ve not noticed any milky oil. I did see bubbles in the coolant. could this be a blown gasket. would your product work for this?

    1. Erran-

      Yes, there is a strong possibility that you may have a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer to remedy the problem.

      You may contact our tech support team at 888-863-0426 so that we may get more details about your vehicle and the symptoms you are experiencing. This will help us make the appropriate recommendations to ensure best results with the use of our product.

      Thank You!

      -BDP

  94. I have a ’95 Lexus SC 300. I was having white smoke from under the car and sometimes under the hood while stopped after driving for a while. I took it to the mechanic and they said it was an oil leaking. They fixed it for $440. But I still see the white smoke coming out of the car. I will call them again on Monday. But can you give me an idea on what it might be?

    1. Mohammed-

      You will usually notice a bluish tint to the steam/smoke when you have oil burning. White smoke is usually associated with coolant burning through your exhaust. We recommend having the car re-diagnosed so that you are able to weigh out your options on getting it repaired.

      Thank You!

      -BDP

  95. I’m looking at a ford Taurus and the guy said it is leaking water really bad and was told it was a head gasket. Do u think this is the case or maybe a cheaper fix??

    1. Mike-

      Losing water/antifreeze is a very common symptom when dealing with a blown head gasket so it is likely that is the case on his Taurus. However, a cheaper alternative to having the head gaskets replaced would be to try the BlueDevil Head Gasket Sealer. More information about the product can be seen here: http://store.gobdp.com/head-gasket-sealer-38386/

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

      Thank You!

      -BDP

  96. My car was making a dripping noise while driving, and then last week it suddenly overheated while driving one evening. Checked my radiator fluid and there was no fluid visible when I checked via the radiator cap. Thought I may need to change my radiator fluid so I began an attempt at flushing the system with distilled water. There was half a gallon of coolant left in my radiator (And it was dirty) and when I added distilled water to begin the flush, it leaked out near where my head gasket is located and the radiator wouldn’t hold any fluid. Would this product work on this problem or do you think I should consult a more experienced mechanic than myself before adding it? If I did add it and it wasn’t the issue, could this worsen an issue? Thank you!

    1. And finally, would it be better to purchase the standard gasket sealer, or the pour-and-go gasket sealer?

      1. Keith-

        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.

        Thank You!

        -BDP

    2. Keith-

      Yes, it would be safe and recommended to add the BlueDevil Head Gasket Sealer. Based on your description, you definitely are losing coolant to some degree and this product is specifically designed to stop coolant loss. Whether it is a blown/leaking head gasket, leaking freeze plugs, leaking heater core, or cracked radiator it will still work.

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

      Thank You!

      -BDP

  97. When driving uphill in my 2010 Kia Rio, I clicked the overdrive option while having my foot on the gas. I quickly regretted this because soon after the check engine light began to blink and my engine started shivering on the next red light. I stopped at a gas station for a few minutes, put gas and when I turned the car back on it was fine.

    The next morning I started the engine and the shivering and check engine light have been going ever since. The shivering only goes as acceleration begins and it stops when I’m past 20 mph.

    I have no white smoke or coolant leaks but when I popped the engine cover open and slipped out the ignition coils, one of the cylinders was filled in oil while another was completely stripped of the rubber that covers the metal (I replaced the stripped coil and the engine runs smoother but the shivers are still there when at a halt.)

    Is this a case of a head gasket leak? Thanks for any help,

    Ignacio.

    1. Ignacio-

      Thanks for your question about your Kia Rio. From your description it doesn’t sound like your problem is a head gasket leak. The oil in your sparkplug well sounds like you have a severe valve cover gasket leak. On a 4 cylinder engine that gasket is right on top and should be relatively easy to change with a mechanic’s tool set. Make sure you clean all the oil out from around the spark plug when you replace the gasket.

      The first thing to do would be to take your car to a local auto parts store like O’Reilly’s Auto Parts or Advanced Auto Parts. These stores will be able to tell you why your check engine light is on and what parts you need to fix the problem. In your case it may be as simple as replacing all your spark plug wires and spark plugs after you clean the oil up.

      Thank You!

      -BDP

  98. I have a small leak and I drive an 2005 Chevy express 2500 3/4 ton 8 cyl van. Which product should I use for sealing the head gasket?

  99. The other day I drove my 1997 Toyota Camry (4 cylinder) about 3 miles got gas and noticed a knocking noise coming from the engine. I went about 5 more miles looked down and my temp. Gauge was to the top hot. Pulled over a gentleman added water to my radiator and noticed the water ws just going staight through. Now the car wont even start. I have no ue about cars! The gentlemn said something about the water pump might have went out. Do you have any opinion on what could be wrong????

    1. Shanda-

      If you are getting a knocking in your engine there is a good chance that coolant/water is leaking into your engine oil. We recommend adding the proper amount of the BlueDevil Head Gasket Sealer to stop the coolant/water loss. For best results, you should change the oil before and after the BlueDevil process. If the water pump has failed you will want to have it replaced prior to using BlueDevil.

      Thank You!

      -BDP

  100. warm hello from australia!
    i drive a dedicated gas ute (pickup) which loses water and the engine overheats unless i top the reservoir every few hundred K’s.
    its been there for over 8 months and I drive my ute every day as im a courier.
    its obviously an internal leak as no water is visible anywhere.
    been to about 5 mechanics none of them can tell me what it is.
    what do you recommend ?

    1. Daniel-

      You likely have a head gasket leak. Have you noticed any milkiness in your engine oil?

      Either way, we recommend using the BlueDevil Head Gasket Sealer to help stop your water loss. IF you do notice water in your oil then you should change the oil before and after the BlueDevil process.

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

      Thank You!

      -BDP

      1. no milkiness at all, oil is perfectly fine and has been for the last 8 months, surely the head would have blown by now?
        ok hope it works.
        cheers

  101. can you explain how the water would seep past the rings? how would the engine have any compression if water could get past the rings? if water could get past the rings then oil would too and the car would smoke like a train.

    1. Eric,

      Great question. Water would only get past the rings while your car is off. If there is an internal head gasket leak then once you shut your car off the pressure in the cooling system would force water into the cylinder. Since your piston rings are designed to seal best while your engine is hot and there is oil constantly being splashed on the underside of your piston, they don’t form a perfect seal after your engine is not running and cool. During this time, the water that leaked into the cylinder can slowly seep past the piston ring into your crankcase and contaminate your oil.

  102. I have an 01 Tacoma with the 3.4L V6. I have white smoke here and there on start ups. But it goes away after a little bit. Its smells of oil, water, and gas. Have no idea why it happens. Ive been told it could be Valve or valve seal leak. And water leak somewhere. I flushed the radiator the other day for unrelatable reason and after refilling it the water was bubbling a lot while truck was running and stopped as soon i turned it off. It didnt start bubbling again when i turned the engine back on a little bit later though. So idk if these are signs of Head Gasket or if i just have leaking valve seals and air bubbles in my cooling system.

    1. Gage-

      You should have a Block Dye Test done to see if combustion/exhaust gases are present within your cooling system. If they are present then we do 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 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.

      You may also have a valve cover leak that can be addressed by adding 1 bottle of the BlueDevil Oil Stop Leak. This product will work as you drive and you should start to notice results after about 100 miles of driving.

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

      Thank you!

      -BDP

  103. my car runs fine no over heating issue but I let it idle for a little bit an noticed a little white smoke then I drove it a little bit an no more white smoke is this a blown head gasket ?

    1. Joe-

      We need a little bit more information before we would feel comfortable stating it is definitely a blown head gasket. Please contact our tech support team at 888-863-0426 so that we can assist you in getting the vehicle repaired.

      Thank You!

      -BDP

  104. I have a 2008 ford focus 4 cylinder. I drove my car for about less than 10 minutes when I felt the car wanted to stop. I looked at the temperature gage and notice it was on H. I had no smoking coming from the engine or the muffler. I recently had my thermostat housing change with oil change. What could be the cause of that?

  105. my car was overheating took it to the dodge dealer they did a pressure test without the hose to the thermastat connected because i was trying to change the thermostat myself but couldnt and i also told them that they said i have a blown head gasket and my fan wasnt working,well my fan does work ,my car does not overheat after using blue devil the overflow bubbles sometime,the thermostat was removed the temp gage never goes pass the half line, the engine has a knocking noise after it has been drivin for awhile when i turn the car off and start it i hear a few knocking and then thats it, and my oil light comes on when the engine is warm only when the car is not idleing,and the overflow will boil over when the cap is off,i rented a test from auto zone to check for combustion the liquid never changed color,could it be because i used blue devil?

    1. Lisa-

      My guess is that you probably have water in your oil which is why you are now hearing a “knocking”. Please contact us at 888-863-0426 (Monday – Friday; 8:00 AM – 5:00 PM EST) so that we may discuss your vehicle in more detail and be able to make the best recommendation for addressing the problem(s).

      Thank You!

      -BDP

  106. Hi I have a 10 year old automatic Focus which has had a coolant leak through core plugs 2 years ago which was properly repaired. The car has been running rough when it starts cold lately and I get kangaroo petrol effect as the revs spike and drop and sometimes stalls if I don’t rev it and even then I can hear it struggle. I hadn’t checked the coolant level in a while but it was low the other day so I topped it up and doesn’t seem to have gone down. No over heating or white smoke. Would this be a small slow leak?

    1. Charlie-

      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 us at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  107. I have a 2000 Alero. Im having big problems. My car keeps overheating and theres a small leak but when I check the coolant, its still full. Plus, theres hose going to the heater core that is blowing really hot air. I need help!!

    1. Katie-

      Please contact our technical support at 888-863-0426 so that we can get a better understanding of the vehicle’s symptoms and give you the best recommendation.

      Thank you!

      -BDP

  108. Have a 1994 Jeep Wrangler with a 4 cylinder engine. The engine, when idleing runs rough, spitting & sputtering at 1000 RPM. Coolant level drops from anywhere between 1/2 gallon to 1 1/2 gallons depending how long it is driven. When you pour coolant into radiator, you can hear it sounds like it’s pouring into the engine itself. Once full, and you drive it all of 1 – 2 miles, the overflow tank is boiling hot to the point where the pressure almost pushes the lid off overflow tank. The coolant level is low again, and their is steam coming from the center part of the top left side of the engine. Don’t see any leaks under Jeep. And I haven’t seen any white smoke.

    1. John,

      Thanks for your question about your 1994 Jeep Wrangler. It sounds like you’ve got at least an external head gasket leak due to the steam you’re seeing from the top left side of your engine but you may also have a small internal leak as well based on how much coolant you’re losing and how hot the overflow tank gets. Since your jeep is a 4 cylinder you can try using BlueDevil Pour-N-Go Head Gasket Sealer (available here: http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/) to seal the leak and get your jeep back to running like normal.

  109. i had all the symptoms, applied blue devil without the thermostat (which is painfully hard to get out on isuzu trooper 98) and at 30 minutes it overheated even more, dropped new oil and tourned off immediatley. now it has all kinds of strange noises and engine is difficult to start (wont star up without pressing the accelerator).
    is my head gasket fully broken? or is the whole cylinder broken now?
    from the outside it look all oily and burnt.

    1. Camila,

      Thanks for your question about your Isuzu Trooper. It is possible that your head gasket leak is simply too big for BlueDevil Head Gasket Sealer to properly seal the leak. Since your problem is unique you can try calling our technical support line for more assistance.

  110. I have a jeep grand Cherokee 200 8 cylinders, had a bad radiator and car overheated 2 times (pretty bad), had radiator replaced, car run fine for 2 weeks, then temperature gage started going all the way up when I am in traffic or car running idle, the coolant level was low, and car running rough, also, the upper radiator hose is really hard (under pressure), wen car is running, although no white smoke from exhausting pipe, no coolant in the oil.
    Could be a head gasket leak?
    P.S. When car overheated I saw a little smoke coming from the engine head.

    1. Franco-

      Yes, it is definitely a possibility that you are dealing with a head gasket leak. Please contact our tech support team at 888-863-0426 so that we may discuss your Jeep and go over some possible solutions with you.

      Thank You!

      -BDP

  111. When I first bought my Toyota Camry 1997 2.2 L 2 years ago I saw a frothy creamy substance under the radiator cap and it looked like it was coming out of radiator. The car had been sitting for some time. i bought a new radiator and the radiator was flushed. Problem went away. Recently the car has been running hot and I could hear the bubbling in the coolant overflow. It ran hot one day and stopped on me. Took it to the mechanic and he said my relay to my fan was faulty and my fan was not working. fixed that. Car still overheated. No signs of milky oil, or white smoke. I was noticing that I was loosing coolant in the radiator and the overflow would still be full. My car started losing power and check engine light came on. the codes read multiple misfires and engine thermostat coolant sensor. I changed the thermostat and the engine thermostat coolant sensor. Still overheating. When the radiator was being flushed, I noticed small particles of grey looking clay/mud coming out the radiator. There were also a lot of bubbles coming up from when the coolant was being put in the radiator. First the mechanic said there could still be air in the system .The mechanic then mentioned a blown head gasket, he also mentioned some type of stop leak was used and could be clogging system. Do you think this could be a blown head gasket and could I use your BlueDevil Head Gasket Sealer???

    1. Jayo-

      Yes, we do recommend using the BlueDevil Head Gasket Sealer to help repair your Toyota. You will want to thoroughly flush the cooling system prior to adding it.

      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 us with any questions at 888-863-0426.

      Thanks!

      -BDP

  112. I have a ’99 dodge dakota r/t. It started to over heat one night so i open the hood and smoke was coming from the radiator and also coolant was squirting out if it. I took it to firestone and they told me it was the head gasket. I took my car to big o tires the next day to let them check it out to and they said I wasn’t the head gasket but it was a bad radiator, radiator hoses, radiator cap,fuel pump, needed a flush and tune up. When I got my truck back everything seemed fine. Doesn’t over heat or even gets close to overheating but my check engine light is on and the whole truck rocks when at a stop light. I took it to another place to see why the light is on and they said it’s a misfire.. could it be my head gasket this while time??

    1. Anthony-

      We recommend changing the spark plugs and then see if you are still getting the misfire. If so, then it is very possible you have a leaking/blown head gasket.

      Feel free to contact us at 888-863-0426 if it turns out the head gasket is leaking.

      Thank you!

      -BDP

    1. Yote-

      Unfortunately, if the vehicle is not able to start, you would not be able to use the BlueDevil Head Gasket Sealer. In order to get the benefit of the product, the vehicle would need to be able to idle for 50 minutes, without overheating or stalling out.

      Thank you!

      -BDP

  113. I have a 91 Ford Explorer 4.0 and it has about an 1/8th inch of oil in the radiator overflow tank never over heated and no antifreeze in oil what is this a cause of thanks

  114. My car over heated when the weather was very hot it misfires at time the oil looks
    good no white smoke I took it to the shop and he said I had a blown head casket I really
    don’t think so what do you think

    1. Annise-

      It is possible to have a head gasket leak without getting water/coolant into your oil or having white smoke coming from the exhaust. Based on your description, it sounds like your vehicle may be getting combustion/exhaust gases blowing into the cooling system and creating pressure, also forcing water/coolant into your cylinders. 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

  115. Based on what Ive read in prior submissions, Im guessing that I too am experiencing over-pressure due to exhaust gasses getting into the cooling system on my 05 4runner. Youve said over and over that I should remove the spark plug to the cylinder that is causing the problem and I would just like to clarify that a little bit. Is it actually ok to run my engine with one of the spark plugs missing? Is that not going to blow unburnt gas all over my engine compartment? Since this vehicle has individual coil packs for each cylinder, would I also too want to completely remove that from the vehicle as well?

    1. Tom-

      It was nice speaking to you over the phone recently. I believe we were able to answer all of your questions.

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

      Thanks!

      -BDP

  116. I have the milky oil and I need to keep adding anti freeze or I overheat. I seem to have no smoke and its leaking all over the ground (the milky substance). Is it my head gasket?

    1. Joe-

      Water/coolant getting into your oil is a tell-tale sign of a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer. 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

  117. I have a 1998 ford f150 started it up today and out of the blue it’s putting out a heavy white smoke and leaking what seems to be a water oil mix out the exhaust pipe. No over heating no water in oil still running smooth. Do you think it’s a head gasket other intake gasket?

    1. Leisa-

      White smoke coming from the exhaust pipe is a tell-tale sign of a blown head gasket. Based on your description, you may also be getting oil into the cooling system. The BlueDevil Head Gasket Sealer is only intended for coolant leaks. Unfortunately, we do not manufacture a product for when you are leaking oil into the radiator. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  118. Have a 89′ Nissan D21 4×4 pickup and does not overheat or leak. All of sudden runs really rough. Took to a mechanic and he said it was a blown head gasket cause he done a pressure test on a couple of the cylinders. I bought the big bottle (yellow label) recently and looking at using this weekend. My question, whats the difference between the yellow label and the pour & go ones? If I use the one that I have, with it being a 4 cylinder, do I need to flush the system & remove the thermostat and replace with new one?

    1. JJ-

      You may use either Head Gasket Sealer. 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 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.

      Based on the cooling capacity of your Nissan, you will only need to add 16 ounces with either product.

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

      Thanks!

      -BDP

  119. i am losing anti freeze and i can’t see where it is going to and i changed thermostat and steal leaking some where if i put the blue devil in will it hurt my car or anything to my car at all?

    1. David-

      The BlueDevil Head Gasket Sealer will not harm the engine or any components of the cooling system in any way. Applying the BlueDevil will help stop your coolant loss and get the vehicle back to its normal running condition.

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

      Thank you!

      -BDP

  120. My car is leaking oil underneath the car, but the engine has not overheated and there are none of the symptoms listed above. I’ve been told it could be a head gasket leak, does that sound likely from the symptoms?

    1. Jess-

      An oil leak is usually not associated with a blown head gasket. It could potentially be the oil pan gasket, rear main seal, or a valve cover gasket losing oil. We recommend adding 1 bottle of the BlueDevil Oil Stop Leak to help stop your oil loss. Once the product is added you can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

  121. oh yeah its the head gasket…. atleast. it could be the head but were not gonna go that far right now. OK so,. bought a 1993 BMW 535i with a 3.2 litre inline six it has 237,800 miles on it wow the first couple days we had it the overheating was wicked bad man tried to bleed it, tried to remove the thermostat and just let it run, flushed the system three seperate times once with prestone radiator and cooling system flush and it began to give me some love in return although it hasent ran for more than 15 to 30 minutes tops. since we got it without over heating running only water now because cost of coolant and a close friend helped me get every air bubble out of the system without running the car and still we have only been able to travel about a half mile or little more before the over heat. yes it has milky oil and i noticed the air bubbles comming from the gasket in the overflow plain as day and just havent wanted to admit it this is my only source of transportation to get to work and its like 8 miles there every day on average right now to travel roughly 5 miles the car over heats about 3 times im interested in your product but the car wont idle for 50 min without the overheat and possibly running completely dry and i dont think that will work but it will idle until the motor cant turn any longer please tell me theres hope here and ill wait for a miracle

    1. Thanks for your question about your BMW. We would recommend you try our BlueDevil Head Gasket Sealer (available here: http://store.gobdp.com/head-gasket-sealer-38386/). Follow the directions on the bottle and if your car starts to overheat, simply shut it down, allow it to cool, then start it again and allow it to idle for the remainder of the time. If you purchased BlueDevil Head Gasket Sealer online or at our partnering auto parts stores it is backed by our money back guarantee.

      Thanks again for your question!
      -BD Auto Pro

  122. 2000 Hyundai Elantra. Radiator cracked. Replaced. Engine overheated so replaced thermostat. Still overheated. No leaks just steaming and bubbling in radiator overflow and hose very hot. Seems to be head gasket. Since this is a small engine, which product should I use and do I have to remove thermostat?

    1. Robb-

      Thank you for asking about your Hyundai Elantra. You would be able to use the BlueDevil Pour-N-Go Head Gasket Sealer, with which, the removal of the the thermostat is not required. 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

  123. I have a 2002 Mitsubishi Galant ES. I’ve taken it in twice already because I recently noticed the temperature gauge climbing up to the red zone but there is no leak or over-heating. However in traffic the gauge climbs up and when the car is in motion goes back down to its normal half-way mark. This morning the radiator was completely empty including the coolant reservoir. A guy at the gas station says there is rust and that something will need to be changed. Any ideas? I really love that car.

    1. Dee,

      Thanks for your question about your Galant. If your radiator is completely empty and there are no external leak, it seems likely that your car does have a blown head gasket. The other possibility is that your car was overheating because it was low on coolant so you could try refilling your cooling system and seeing that simply will solve your problem. If your coolant disappears again without any external leaks you probably have a blown head gasket. If you car is a 4 cylinder, we would recommend using BlueDevil Pour-N-Go (available here: http://store.gobdp.com/pour-n-go-head-gasket-sealer-00209/). The other thing you might want to check is to make sure your engine cooling fans come on after you’ve been sitting in traffic. You should be able to hear them engage when your temperature gauge starts climbing.

      Thanks again for your question!
      -BD Auto pro

  124. Hi I drove my car today for about 15 miles and on my way back i notice that there is a white smoke coming out of the tail pipe and when i rev up a Thick white smoke comes out of the tail pipe, I got home and let the car rest for like 15-20 minutes and i drove again for like 5-7 miles and on my way back there’s that white smoke again but not as much as it was earlier. This was the first time i saw this white smoke coming out of my car’s tail pipe. So i went back home and let the engine cool down, I check the coolant in the radiator and its good but low coolant reservoir level. Is this a Head gasket problem? Also i bought a r pour n go Head gasket sealer. Just wanted to make sure that my problem is head gasket before i use this product.

    1. Mike-

      White smoke coming from the exhaust pipe is often a tell-tale sign of a blown head gasket. Based on your description, we would recommend using the BlueDevil Head Gasket Sealer. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  125. 1999 4 Runner 4 cylinder I noticed white smoke from tailpipe a few weeks ago for a couple days in a row, but thought it was burning off overflow from recent oil change and top of fluids. This morning drove 40 miles to work and started smelling “hot” and noticed temp gauge going up to red. Bought 50/50 coolant and when adding to coolant tank noticed it was completely dry. Have not noticed any dripping. It has been running rough in the mornings until a few miles in to the drive. Would this product be appropriate to try? Would I eventually be looking at potential costly head gasket replacement? Does this product just put that off a little longer? What should I look for after adding it?

    Thanks for your information!!!
    Kim

    1. Kim-

      Thank you for asking about your Toyota 4Runner. 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.
      Once the product seals, it would create a permanent seal. After you have completed the BlueDevil process, you should check your coolant levels to make sure you are no longer losing coolant and that the vehicle is no longer overheating. It would also be a good idea to replace any spark plugs that have fouled out due to water/coolant getting into the cylinder(s).

      Thank you!

      -BDP

  126. 2002 Impala 3.4 liter. It began over heating last week. Would over heat and stop blowing hot air from heater for a few minutes. As soon as hot air began blowing again, the temp would drop back down to normal. 2 nights ago, it over heated and would not correct itself. I changed thermostat to begin with. No cure. Changed water pump, no cure. Bled the lines and flushed the heater core. It does run a little rough I’ve noticed since this began. I’m not mechanic but this does seem to bring me to the conclusion that it is quite possibly a head gasket. It’s building up quite a bit of pressure in the coolant system. The thing that throws me though is the heater. I would think that even if the head gasket was ruptured or even a crack in the head, the heater would still operate normal. Any suggestions?

    1. Brandon,

      Thanks for your question about your 2002 Impala. Based on your description it does sound like you’ve got a blown head gasket. Most auto parts stores sell a chemical test you can use on your coolant to check for exhaust gases that will tell you for sure. It may make sense for your heater not to work due to the blown head gasket. As the coolant leaks out into your motor there wouldn’t be enough coolant to get pumped through your heater core which would cause your heat to blow cold. Each time you added more coolant it would remedy this problem for a short time.

      Since your car has a large V6 we would recommend using BlueDevil Head Gasket Sealer (available here: http://store.gobdp.com/head-gasket-sealer-38386/) to seal the leak and get things back to normal.

      Thanks again for your question!
      -BD Auto Pro

  127. when some one got a plowing head gasket, is there any water should be in side the engine block?

    If knowing, please reply.

    thank you

    1. Aia,

      Yes, if you have a blown head gasket it is possible for water to be inside the block, meaning in the cylinders as well as in the oil pan and possibly in the oil galleys.

  128. I have a mázda protege 2003 and it doesnt overheat but when i Drive it for like an hour or so and then turn off the engine it starts bubbleling and it blows the cap off of the reservoir and water blows out what can my problem be? Thanks in advance

    1. Sergio-

      We would recommend using the BlueDevil Head Gasket Sealer for this situation. Based on your description, it sounds like you are referring to possibly 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

  129. Have a tdi polo used to over heat changed fan,,waterpump,some hoses,and use anti freeze maybe cup every 10day’s anything to be worried about

    1. Willem,

      Thanks for your question about VW Polo TDI. Since the cooling system in your car is so essential to its safe operation, we consider any leak a problem. Yours does sound very small, so it may be difficult to track down. You can try adding UV dye to your coolant for help in tracking down your leak, or if you can identify where it is coming from, you can choose the appropriate BlueDevil Product here: http://store.gobdp.com/products/.

      Thanks again for your question!
      -BD Auto Pro

  130. Have a 05 Saturn relay, the gauge moves to hot everyday, once a day, then returns to normal within 5 mins. I have no leaks, white smoke,or any other losses. When the gauge goes to overheat, sometimes but not always the car will slow down and shake. Then it will return to normal and the car will ride fine. Took it to my car Dr and he changes the water pump and the thermostat, now he thinks it might be a head gasket, lots of money.
    So, what if I put your Blue Devil product in the car then find out its not a blown H G will it hurt the car, and do I have to remove the thermostat as that was another large expense.
    Thanks you any help you can offer.

    1. Sue,

      Thanks for your question about your Saturn. The problem you’re describing does sound like a thermostat. If changing the thermostat didn’t help the problem or change the symptoms then it’s possible you’ve got a clogged cooling system. before you try a head gasket repair, try using BlueDevil Radiator Flush (available here: http://store.gobdp.com/radiator-flush-00204/) to flush the system and see if that helps. If not you can try performing a pressure test on your cooling system to test for a blown head gasket before you try using BlueDevil Head Gasket Sealer.

      Thanks again for your question!
      -BD Auto Pro

    1. Lashandra-

      Based on your description, you are experiencing some of the tell-tale signs of a blown head gasket. We recommend using the BlueDevil Head Gasket Sealer for your Ford Taurus. You are going to 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 specific questions.

      Thank you,

      -BDP

  131. I have a 2005 Buick LaCrosse overheating, I put coolant in it and the overheating stops for about two weeks but then I am need to put more coolant in it again. No leaking at all. Does this mean my gasket is blown, and what can I do to fix it?

  132. I changed the thermostat and my car still overheats, I have no heat and top hose is hot bottom heat is cold. fluid is cold even when it says the engine is overheating. Would I have a bad thermostat or would it be a head gasket? it is a 2005 impala. No smoke out of the tail pipe and I have not checked the oil.

    1. Brad,

      It sounds like you’ve actually got a bad water pump. Your temperature gauge will read hot as the temperature probe is somewhere on your engine block or head, so even if the water isn’t circulating that sensor will get hot. Also, your top hose would get hot as the temperature rise of the water in your engine will cause a little bit of circulation, but the fact that the bottom hose is cold and you have no heat leads us to believe your water pump isn’t properly circulating your coolant.

      Thanks again for your question!
      -BD Auto Pro

  133. I have a 2001 Nissan Altima 2.4. While driving, coolant system becomes pressurized creating a steam leak from the radiator cap. I have replaced the cap, radiator, cap again, radiator again, then cap again to a 15psi cap. (just to trouble shoot with) it still has steam leak from radiator cap. there is no bubbles in the over flow. I have used the chemical tester which showed no sign’s of exhaust leak in the coolant system. I’ve parked the car for a couple of weeks and now have a good coolant leak from the weep hole in the water pump. Any help would be appreciated?

    1. Thanks for your question about your 2001 Altima! The radiator and cap are the only parts of your cooling system that maintain pressure so we’re having a hard time piecing together another problem. The only thing we can think of is that your water pump has been failing and isn’t creating adequate circulation which would create hot spots in your system and an abnormally high pressure. You can replacing the water pump and seeing if that helps. If you choose to do that, try running your car with the cap off up to temperature and checking the temperature of the coolant circulating through the top of your radiator to see if it’s abnormally high. You may also consider replacing your thermostat while you’re changing the water pump to make sure that is opening at the proper temperature and not abnormal.

      Thanks again for your question!
      -BD Auto Pro

  134. I have a 1987 Buick Lasabre, I reved up the engine for about 3 minutes while trying to warm the engine. The motor started to rattling, I thought that it was the harmonic balancer. soon the engine locked up what do you think I’ve done.How can I unlock the engine,. should I junk the car. is it worth the repair with 147,000 miles.

    1. Robert,

      Thanks for your question about your Buick Lesabre. The rattling leading to a locked engine sounds like you’ve got serious engine damage. It’s possible that your car was low on oil, or that since your engine was cold when you revved it up the cold oil simply could not lubricate the bearings or rings causing it to lock up. Since it rattled before it locked up, our guess is that you’ve spun a bearing. It is possible that you can unlock the motor, but even if you could, we wouldn’t recommend putting many miles on it before opening it up to assess the damage. It may be worth checking into what a used motor would cost at a junk yard.

      Thanks again for your question!
      -BD Auto Pro

  135. I noticed a very minute amount of white smoke at high revs on my D21. so I put in the right mixture of antifreeze and water per the Datsun/Nissan manual. The manual reads that no unnecessary high revs, at start up or shut off. The problem seems to be gone as I am treating my motor properly. Is it possible that antifreeze is thicker than water and I solved the problem by just following the shop manual? I am not opposed to killing a small leak, right now, do not get me wrong. Any suggestions as the white smoke is gone, and the radiator coolant is a real pretty green, I think maybe the best thing to do is slow down. The plugs have been changed and all come back normal. Is this stuff available for preventative maintenance? I thought I was sold on Steel Seal but I think I like Blue Devil better because of the testimonials. Open to comments, questions, and suggestions

    David

    1. David-

      We do not manufacture a Head Gasket Sealer that can be used as a preventative maintenance. However, we would like to discuss your vehicle and its current symptoms with you in order that we can make the best recommendations.

      Please contact our tech support team at 888-863-0426 (Monday – Friday; 8:00 AM – 5:00 PM EST) so that we may assist you.

      Thank you!

      -BDP

  136. I’m losing coolant through my exhaust tail pipe, and it stays steaming. Most definitely think I have a head gasket leak. I have a Ford Explorer V8 and tried sealing with the small 16oz bottle by just adding to radiator, then I read that was for 4-6 cylinder engines, it sealed for a little while then started leaking again. This time I bought the bigger bottle, removed the thermostat and poured it in but didn’t lower level enough and was only able to get about half the bottle in. after running car for 50 minutes i then drained a bit and put more blue devil in. It didn’t work, Then my water pump started leaking externally. I have just changed my water pump so now I am back to just the water coming out the tail pipe. Maybe I lose a quart of coolant every 50 miles. Can I add the big 32 oz bottle of blue devil again without worry of it damaging additional components?

    John

    1. John-

      The proper use of BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/) will not harm or have any negative effects on an engine. We recommend reapplying one full 32 ounce bottle of BlueDevil Head Gasket Sealer to your Explorer; be sure to leave enough room for the entire contents as your V8 does require a full bottle. This should help stop your coolant loss and get the vehicle running normally again.

      Thank you!

      -BDP

  137. I’m thinking about getting a car that has a slight headgasket issue. You said that the product is guaranteed to fix the headgasket. If it doesn’t work, do you get a refund on the product? Is it even worth trying?

    1. Jim-

      Yes, the BlueDevil product carries a 100% money back guarantee. Overall the product carries a success rate of over 90% so as long as you are not dealing with a severe leak then you should have no problem sealing it.

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

      Thank you!

      -BDP

  138. I have a 2003 BMW 530i I bought from guy his mechanic said the head gasket was gone, I tinkered with it the car overheated with or without the resevoir cover on i bled the system in which there was lots of air after the bleed now car doesnt get hot at all but. If I leave the resevoir cap off no over heating or nothing if I put the resevoir cap on car still doesn’t. Over heat but does build lots of pressure in the resevoir and blew a crack in it does this sound like a head gasket issue if so would blue devil still work with resevoir cap off

    1. Jeremy-

      We do recommend using BlueDevil Head Gasket Sealer in your BMW.

      Due to your vehicle only having 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. The reservoir cap should remain on for the idle.

      Based on your description 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 capacity.

      Thank you!

      -BDP

  139. I have an 04 Toyota Sienna. All of a sudden it lost a considerable amount of coolant then overheated and died. I looked and couldn’t find any specific area of a leak. I filled the overflow tank with water, ran the engine for about 30 minutes and could not find any leak. Any suggestions?

    1. Kollin-

      Please contact our tech support team at 888-863-0426 so that we can get more details about your vehicle and what you have experienced. We would be happy to assist you in making sure the vehicle is performing as it should.

      Thank you!

      -BDP

  140. Hi

    I have a VW golf V6 my radiator fans have stopped working and my engine overheats but then goes to normal as I blast the heating

    I haven’t lost any considerable coolant but found some by some I mean not too thick and very sparingly white milky colour on my oil cap.

    My car exhaust also let’s of white smoke intermittently

    Have I blown a head gasket and will your products work if so which one

    1. Zee-

      Thank you for asking about your Volkswagen Golf. water/coolant getting into the oil and white smoke coming from the exhaust pipe are tell-tale signs of a blown head gasket. We recommend using the BlueDevil Pour-N-Go Head Gasket Sealer. As long as the vehicle can idle for a full 50 minutes without overheating or stalling out, and you are not losing more than about a quart of water/coolant in that 50 minutes, you would be a good candidate for the product.

      Thank you!

      -BDP

  141. 2002 buick rendezvous, I usually heat my car up for 20 minutest in the cold winter. After driving (stop & go) 20-30 mins I get “hot coolant; overheating”warning. I immediately pull over (engine off for 3-5 mins) & this gives me another 20-30 mins. I smell a sweat Inscent smell and today I noticed my full reservoir has white foam bubbles inside …should I go with 16oz pour & go? What will be my best/next move?

    1. Kelly-

      Thank you for your question about your Buick. We recommend using BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/).

      It sounds like the vehicle may be getting combustion/exhaust gases blowing into the cooling system, creating pressure and eventually causing the engine to run hot. 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

  142. I have a 2001 toyota tacoma and it has been overheating for a while so i replaced the thermostat,waterpump,fanclutch and did a radiator flush and it is still overheating i noticed that I could squeeze the hoses from and to the engine from the radiator together which i think shows that they are bad and I am losing pressure somewhere what else can I do would a pressure test be the next step or is there something else I can do

    1. James-

      Yes, we recommend a pressure test. Another test you could do would be a “block dye test” this will test for combustion/exhaust gases in the cooling system.

      If it turns out that there are combustion/exhaust gases present within the cooling system then we recommend using BlueDevil Head Gasket Sealer (http://store.gobdp.com/head-gasket-sealer-38386/).

      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 capacity of your cooling system.

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

      Thank you!

      -BDP

  143. I have a 2000 Jeep Grand Cherokee 4.0L 6 cyl. I am losing coolant a a slow rate, no milky oil, but when im driving a have a bad miss on second cyl. to the point that once I get shifted through the gears and i’m between 1500-2000 rpms I have vibration. I have already replaced everything else that could cause the miss. Could I possibly have a blown head gasket causing my problem and if so which product would be best to use to repair problem.

    1. Robin-

      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. You will only be able to run the engine with 1 spark plug pulled.
      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.

      Thank you!

      -BDP

  144. I have a 2003 malibu with about 130000 miles on it. My alternator went bad about a month ago and had it replaced. After that my cars heat stopped working and very shortly after started overheating. My mechanic said it was a thermostat which cost me about 125$ for the labor. That did not provide any difference. He recommended the heat sensor and i did it because the part was only 15$. Still the car overheated and heat did not work. So i took it to another shop and they said it was “definitely” the intake manifold gasket. I researched it also and it made perfect sense. Now i pick up the car today and although the heat is working, the car is putting like it needs new plugs or something and the temp gets a little over half way but does not overheat all the way. This mechanic says it is a bad head gasket now! Obviously im pissed that he did not diagnose the problem right if that is the case but I really just want to know if this makes sense?

    1. Eric,

      Thanks for your question about your Chevy Malibu. it is possible that you have a bad head gasket but before going through the labor we would recommend having a compression check done, if not a chemical test for exhaust gasses in your coolant. As for the car putting, it sounds like maybe some contamination got in the intake system when the mechanic replaced the intake manifold gasket. You may try replacing your spark plugs first to see if that clears up your idle.

      Thanks again for your question!
      -BD Auto Pro

  145. Hi,

    My car has never overheated but the compression is low and the power when the transmission 1 or 2 is less, especially on the hilly roads. Could this be a head gasket issue?

    Thank you!

    1. Mark,

      Thanks for your question. Low compression can be caused by a blown head gasket, worn valve seats or bad piston rings so that alone usually does not indicate a blown head gasket. If you do have a blown head gasket, compression will usually be low on 1 or 2 cylinders but correct on the rest. The low power you described is also more of a symptom of a bad engine rather than a blown head gasket. Try checking for other symptoms of a blown head gasket like water in your oil or bubbles in your radiator. Some auto parts stores sell a chemical test for a blown head gasket that test for the presence of exhaust gases in your coolant. If you can find one of those tests it will help you know for sure.

      Thanks again for your question!
      -BD Auto Pro

  146. I am trying to decide to buy the head gasket sealer. I have a nissan altima 2001.. someone told me my head gasket looks like it is leaking… there is a milky looking oil leak.. my fan always stays on after i shut the engine off for over a minute.. and when I try to drive over 60-65 mph my car starts to vibrate and I cant really get it to go faster.. It is not worth the investment for me to get a new head gasket (if thats even the problem) but will this product work is the leak is excessive but my car is still running?

  147. Hi Sir, i have 1984 jeep cj7 6 cylinders 258. It is making a lot of carbon on just one spark plug, blow a lot of steem to the carburator and make airfilter wet with milky oil. What is it? Now, should i use the BlueDevil priduct or not? Do i have to flush the rediator after 50 min. Or let it stay in it?

    1. Parminder-

      Thank you for asking about your Jeep CJ7. 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. You would want to change your oil before and after the BlueDevil process.
      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. You will only be able to run the engine with 1 spark plug pulled.
      You do not need to flush the system a second time after the process is complete. The product only reacts to heat once, so it would not continue to react or continue to seal once the idle period finished.

      Thank you!

      -BDP

    1. Mark-

      Unfortunately, we do not manufacture any products that are intended to stop oil from entering the cooling system. Your only solution may be to take the vehicle to a certified mechanic to get the hard part repair.

      Thank you!

      -BDP

  148. 2010 dodge nitro sxt. Vehicle stalled on the road when a friend was driving it. We think it over heated because it wouldnt restart. We replaced the water pump, starter and serpentine belt. Car worked fine for about a week. Then i noticed one time yesterday it was running hot. It didnt over heat, i shut the car off. And we put some (very little) coolant in it. Ran fine. The next day i turn it on..a loud clicking sound came on, and white smoke came out of the exhaust. Eventually after letting it run, all this went away. But vehicle shakes when in neutral. No milky oil on dip stick not over heating at all. white smoke leaves afer awhile. I drive at least 30 miles to and from work.. no overheating still.

    1. Miguel-

      It sounds like you may be seeing the early signs of a blown head gasket but it is very difficult to say for sure based on your description. We recommend taking it to be looked at by a certified mechanic so that you may get an exact diagnosis. Once you know what specifically is wrong with your Dodge you will have a much better idea on what your options are and be able to address the problem appropriately.

      Thank you!

      -BDP

  149. I drive a 1999 Mercedes-Benz s class. Whenever I drive for about 40 minutes, the car won’t over heat but as soon as I Park the car and turn off the engine, coolant will start rushing out from the escape pipe connected to the radiator filler.
    What could be the problem.?

    1. Edward,

      Thanks for your question about your Mercedes. It sounds like your car is experiencing an unusual amount of heat soak. Once you shut off your car, the coolant stops circulating but your engine is still hot, especially after a long drive. This can cause an increase in temperature and therefore pressure for a short time after you turn off your car. The overflow of coolant you see could be an indication that your radiator cap is starting to go bad and can’t hold the extra pressure, or it could be an indication that your car is running slightly hot due to a fouled cooling system or a bad thermostat. If a new radiator cap doesn’t help try flushing your system and replacing your thermostat.

      Thanks again for your question!
      -BD Auto pro

  150. I have a Toyota Hilux surf. I have noticed pressure builds inside the radiator. It also overheats at Highways, driving locally, no problem. Temperature can reach 3/4 then drop to about half without even stopping. what can be the problem?

    1. Ruramai-

      Thank you for asking about your Toyota Hilux. It sounds like the vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. This can be confirmed using a “block dye tester”. If the combustion/exhaust gases are present then we definitely recommend adding 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. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  151. I have a subaru legacy 2003, the oil pressure light came on, rattling sounds in engine, signs of bubbles in oil, what could this be?

    1. Ryan-

      Thank you for asking about your Subaru Legacy. Based on your description, it seems like you may be getting air into the oil system, causing a buildup of pressure. Unfortunately, we do not manufacture a product for this type of an issue. You may want to have the vehicle looked at by an ASE certified mechanic for a proper diagnosis.

      Thank you!

      -BDP

  152. You mentioned a great tip to make sure your vehicle is fully warmed up before you start checking for white smoke. My old car used to spit out a lot of water vapor and I was always worried it was a bigger problem. It’s a good idea to warm up your car for any kinds of visual indicators to make sure it isn’t from the car sitting or anything like that.

  153. Sir, I have a Toyota Corolla 2000, Toyota 2E engine. If my Aircon is on, 2 fans are working. If I do not use the aircon, the temperature is normal even for a long ride. But when the aircon is on, although both fans are working, after more than an hour of travel, the temperature goes up and if I check the radiator, coolant is almost empty although it is still full before I started to drive. Is it possibly because of cylinder head gasket?

  154. I do have a BMW 2500 of 1972, and as been in the garage since last year, yestarday a took out for an inspection and on do way I could see a loot of smoking coming out of the car, and I drove back home. This morning I checked the level of water, and a loot of wter was missing, fill up again with water, and after a few minuts the water as gone,checket the floor with same of that water on the floor, then started the engien start ok, after a few minuts I discarved the wich was missing went to the auxhoust system.
    Fore wat I read on your page, I understand that I am goimg to need a bluedevil pour-n-go 16oz head gasget sealer.
    Hope I can get your bluedevil here in portugal.

    Regards, Jose Fernandes

  155. I brought my new (used) car in for it’s first service, and they told me it leaked a bit (even though I had never had any leaks on the driveway). Anyway, the very next day it leaked a fairly large puddle of coolant, and when I brought it back to the shop they told me they had suspected it might be the head gaskets. It shows no other signs described in the article above and only leaked after they did the service. Should I just get somewhere else to diagnose if it’s that?

    1. Matt-

      Thank you for your question. Based on your description, it is tough to say exactly what the issue your vehicle may be having. It is never a bad idea to get a second opinion, so taking it to a different shop for a proper diagnosis would be beneficial. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  156. Hie

    I have a 1999 Nissan SE 2.7 pick up truck. I recently noticed some oil in the radiator and when i drive the car , after one week i top up water in the radiator by 750ml. Upon starting the car and driving for 10 minutes i notice white smoke but eventually it disappears. I recently flushed the radiator. The temperature always never exceed 1/4. Could there be a leak.

    Please advise.

    Regards,

    Teejay Nyanga

    1. Teejay-

      Thank you for asking about your Nissan SE. Based on your description, you may be experiencing a head gasket leak. Unfortunately, BlueDevil does not manufacture a product for when you are getting oil into the radiator. A hard part repair may be your best option.

      Thank you!

      -BDP

  157. Your description of symptoms seems to indicate that coolant leaking into the engine is common. Is it also possible that oil leaks into the coolant? I am not losing coolant and car was not overheating until yesterday (granted, it was 95 degrees and I was driving on the expressway). After about 45 minutes on the road the car’s engine was extremely hot. After slowing down on a local road, the temp gauge quickly recovered, but the engine itself was still hot. The coolant level is good, but the color is dark orange. FYI – I just had a coolant flush 4 months ago.

    1. JC-

      Yes, it is possible with a head gasket leak, to be getting engine oil into the coolant. The BlueDevil Head Gasket Sealer is only intended for coolant/water leaks. Unfortunately, we do not manufacture a product for the type of leak you have described. A hard part repair may be your best option.

      Thank you!

      -BDP

  158. Hi

    I have a Toyota Tacoma V6 1996, and suddenly (from 1 day to another), my truck start shaking, like once it did, for a bad spark plug cables (2 years ago) and recently for old spark plugs (february this year), it was a engine light saying there was misfire. Both cases, changing cables and changing spark plugs for new ones fix the situation. In this ocasion start with the same symptom, showing an engine light PO 303, misfired in cylinder 3, I changed again cables and nothing happened, same hesitation…, so I start trying to diagnosis the problem and I noticed a lot white smoke from the tailpipe when push the pedal (at 4 pm) and latter checking the spark plugs, the one from cylinder 3 looks dirty in comparation of the others, looking with a red-orange color on it. In that moment, a friend told me it was a head gasket leak and recommended me get your product. My questions are: Is it a head gasket leak? (I think yes), and the most important one is: Because the hesitation, the shaking because the big amount of misfires (like 70 and growing in a short period of time) your product will be able to seal the leak?

    Thank you very much for your time

    1. Antonio-

      Thank you for asking about your Toyota Tacoma. 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

  159. I have a 2001 Jeep Grand Cherokee Laredo with 4.7L V8 engine. A few days ago the upper main radiator hose burst with what looks like an inch long gash in the side. The hose was only 2.5 years old and had been replaced with the radiator.

    At first I just thought the hose was defective and burst, but after replacing the hose and driving the car a few times, it started over heating again. This time I towed it to dealer for fear of water pump or thermostat being bad. Dealer tells me that they did pressure test and coolant is leaking into the cylinders. They did not say it was a blown head gasket however, instead they are telling me the head must have got to hot and warped thus breaking the seal. They are saying I need to replace the heads.

    From reading here however, I am wondering if it is possible the main cooling like ruptured because the head gasket was already compromised and letting high pressure gases into the hose.

    Is there anyway for me to know if this was caused by head gasket leak versus the hose rupture causing high temp and warping the heads?

    if just head gasket, would your product seal this?

    1. Randall-

      Thank you for asking about your Jeep Grand Cherokee Laredo. 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.
      Pulling the thermostat will improve your chances of seeing good results, as it will create a free flowing system but, the product still needs to go directly into the radiator. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  160. I have a 2007 Suzuki forenza that has thin white smoke coming from the exhaust pipe also the coolant doesn’t stay in at all running out after miles and it’s not leaking on the ground and my car runs hots out the blue almost instantly the hose that leads to the radiator was replaced but that’s all what do you think my issue is and can anything help

    1. Sente,

      Thanks for your question about your Suzuki Forenza. In your description, you do have quite a few symptoms of a blown head gasket listed so that very well could be the problem you’re having with your car. You can purchase a blown head gasket test kit from most auto parts stores that will chemically test for exhaust gas in your coolant to prove that you do indeed have a blown head gasket. If you do, you can use the appropriate BlueDevil stop leak product to seal the leak.

      Thanks again for your question!
      -BD Auto Pro

  161. i have a 2007 grand prix i just had my oil changed and they said coolant was low and i had a leak by my valve cover
    and it was coolant no milky oil or white smoke what could it be

    1. Bruce-

      Thank you for asking about your Pontiac Grand Prix. Is the vehicle overheating at all? 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

  162. hello i just replaced the radiator on my 2006 kia spectra( because it was cracked) and put in a new battery( it had a bad cell) and a new thermostat( because i was putting water in there and i figured it would be rusted from that ) and it started fine but i noticed that the upper hose was swelling and fluid wasn’t circulating and (white smoke came out the exhaust) so after awhile i ended up taking the thermostat out but still the same problem( swollen upper hose ) so the next day i go to the car and wont start up the fuel is ok the battery is ok not drained but the coolant was not in the radiator but there was an oil spot on the towel i had placed there. so my question is will sealant work or is there no hope please email me kitapinnix@gmail.com

    1. Nikita-

      Thank you for asking about your Kia Spectra. 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

  163. Hi I have a 2001 dodge caravan and it’s overheating, there’s a visable coolant leak, there has been white smoke a time or two and there is gas coming from the bottom of the bottle that holds the coolant. What come be going on here?

  164. I have a 2005 impala. I just had a brand new water pump, thermostat, and new radiator put in and it is still running hot. The oil is not milky and There’s no white smoke. What could be wrong?

    1. Dez-

      Thank you for asking about your Chevy Impala. 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

  165. i have a subaru legacy of model 2003, which lately was leaking on the radiator and overheating but after i have fixed the radiator, it keeps on overheating so could this be the gasket problem.

    1. Hope-

      Thank you for asking about your Subaru Legacy. Are you still continuing to lose 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

  166. I have VW Beetle 2001. before I purchased It had been sitting a good 2/3 years. These cars do not have a temperature gauge on, however when I got back in the car the other day steam was coming from the bonnet. When I popped this up and got out I could see water/coolant laying all over the ground. The steam was coming from where I had put the coolant in. I quickly went and got some water to top this up to make sure I could drive home and let the engine cool, a while after I then had a flashing and beeping red thermostat light on my dash. I assumed this was indicating that the engine was over heating and so I went to my local part store and picked up some coolant and got them to test the levels. I then drove home and the same thing happened, I checked a couple of time and the coolant level seemed to be going down but no water under the car. It’s since been over a day and it hasn’t happened again, and the thermostat has stayed blue but this may be because I’ve only been doing small trips.

    Aside from that, some levels of white smoke have been coming from my engine but like I said it has been sitting a while before I purchased so I wasn’t sure if this was connected. The engine oil has no white gunk it’s clean but I do seem to be using a lot of fuel (It is 2.0ltr engine but still using quite a bit more than I would expect)

    Wondered if you had any tips ?

    Thank you

    Roxanne

    1. Roxanne-

      Thank you for asking about your Volkswagen Beetle. Based on your description, it is possible that you are getting combustion/exhaust gases pumping back into the cooling system. The pressure may have become so great that it blew the water/coolant out of one of the hoses or radiator cap. 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

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