Why is My Valve Cover Gasket Leaking?

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Valve Cover Gasket

Your valve cover gasket may be leaking for a variety of reasons.  It could be shrunken, cracked or rotten, or your valve cover itself may be cracked or broken or one of the valve cover bolts may just be loose, allowing a little leak.

Your car may have 1 or 2 valve covers depending on its configuration.  A straight 4 or 6 cylinder engine will have 1 valve cover, while “V” configured engines like a V6 or V8 will have 2 valve covers, one on each side.  The valve cover sits on top of the cylinder head and does just what its name suggests, covers the valves.  The valves in your engine are opened and closed either by a rocker arm that is moved either directly by the camshaft lobs, or by pushrods that ride on the cam shaft lobs.  The valves, rockers and pushrods or camshaft all need to be lubricated with engine oil to stay cool and not wear out.  The oil pump draws oil out of the oil pan and pushes it through the oil filter, then up into the engine head where it can lubricate all the moving components and then it drains through small holes back into the oil pan through the block.

This means that there should not be any high-pressure oil around the valves, simply oil flowing around them.  The lack of high-pressure oil under the valve cover gasket means that most valve cover gasket leaks will be very slow, or more of a weep rather than a stream or a squirt.  This can make them difficult to diagnose as there will be less evidence of the leak.  Even though they can be slower leaks, fixing a valve cover gasket leak quickly is important for a few reasons.  First, the oil can leak onto the exhaust manifold causing fumes and the possibility of a fire.  Also, a slow leak can still deplete your engine oil quickly, causing premature wear or even catastrophic damage to your engine.

How to identify a valve cover gasket leak

Valve cover gasket leak www siennachat comFirst, let’s make sure you actually have a leak coming from your valve cover gasket.  Nothing is more frustrating than putting a lot of time and energy into solving a problem, only to find out all that work was for nothing and your problem was actually something else.  Luckily valve cover gaskets can usually be pretty easy to diagnose.  The valve cover gasket is almost always the highest seal in the engine.  Your job is to find the evidence of the leak, or dripping oil and follow the drip higher and higher on the engine until it disappears.  This can be pretty easy if it is on the front or side of the engine, but if the leak is in the back near the firewall it can be difficult to do without a flashlight and a mirror.  The best way to check for a valve cover leak is to move enough things out of the way that you can check the whole perimeter of the valve cover from the top side.  This may involve removing spark plug wires, throttle linkages or even the intake manifold.

Once you have the entire perimeter of the valve cover gasket visible, you need to check for a few things:

Valve cover inspection:

  1. Loose or missing bolts or screws
  2. Cracks in the valve cover
  3. Part of the gasket sticking out from under the valve cover
  4. Evidence of a leak in the form of oil or black residue around the edge of the valve cover.

Once you’ve proved you have a valve cover gasket or another type of oil leak (if so, you may want to look at an oil leak sealant), you need to decide how to move forward.  If you have a missing bolt or screw, it should be replaced immediately.  The easiest way to do that is to remove a second bolt and take it to your local hardware store and ask them to match it.  When replacing both, make sure to use a torque wrench to torque the bolts to the factory recommended setting.  If you tighten them too much, you can risk breaking the valve cover, and if too loose, they can fall out again or cause a leak.  If the valve cover is cracked or broken, get a replacement valve from the dealer, a junkyard, or even try eBay.

How to fix a valve cover gasket leak

If you find evidence of a leak, the best solution is to use BlueDevil Oil Stop Leak.  Adding 8oz. of BlueDevil oil stop leak to your engine oil is guaranteed to permanently seal any oil leaks in your vehicle’s engine.  BlueDevil Oil Stop Leak is not a petroleum distillate like other stop leak products on the market today.  That means BlueDevil Oil Stop Leak can act as a valve cover gasket sealer and stay in your engine oil until your next oil change and will not clog or harm your engine in any way.  BlueDevil Oil Stop Leak will restore dried, cracked or shrunken seals to original size and shape, allowing them to reseal and stop your leak.

BlueDevil Oil Stop Leak

Pick Up BlueDevil Oil Stop Leak today at any of BlueDevil’s partnering auto parts stores:

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

You can also purchase BlueDevil Oil Stop Leak, and other BlueDevil products directly from BlueDevil online here: Oil Stop Leak

Pictures courtesy of: www.automedia.com and www.siennachat.com

183 responses to "Why is My Valve Cover Gasket Leaking?"

183 Comments

  1. Jeffrey Dodds on March 23, 2014 at 6:49 pm

    I have a 1987 Nissan 300zx that will over heat right at about 25 minutes of freeway driving at 65 MPH. After a lot of checking my mechanic finally found radiator fluid in my first cylinder. No where else. Will your Blue Devil product help me? Keep in mind I have had this car for a long time and it it still pretty clean. I plan to keep it for a long time. That in mind will your product do the trick, or should I bit the bullet and get the head job?

    • BlueDevil Pro on March 31, 2014 at 3:29 pm

      As long as your vehicle will be able to idle for a full 50 minutes without overheating, or stalling out, then you should have no problem in sealing it with BlueDevil.

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

      • James on September 19, 2018 at 12:34 pm

        Saw your post for valve cover leaks, put a bottle in and the next morning the leak had stop leaking on top of the exhaust pipe, Thanks. Will kept you update for how long it last. *****

        • BlueDevil Pro on September 19, 2018 at 1:32 pm

          James-

          That is excellent to hear! Once the product seals, it would be a permanent seal, so you should be good to go at this point. Please keep us posted.

          Thank you!

          -BDP

    • ryan on February 18, 2016 at 3:06 pm

      I have a 98 blazer its leaking oil down from behind motor not a lot but enough for it to drip on ground every so often would blue devil seal it until I can get replaced

      • BlueDevil Pro on February 19, 2016 at 8:40 am

        Ryan-

        Thank you for asking about your Chevy Blazer. Based on your description, we would recommend the BlueDevil Oil Stop Leak. You should expect to see results after about 100-200 miles of driving.

        Thank you!

        -BDP

        • Shawn decker on November 3, 2019 at 10:59 pm

          i have a 2002 Honda civic that leaks oil from the valve cover but it is slow will bluedevil oil stop leak fix it?

          • BlueDevil Pro on November 4, 2019 at 9:30 am

            Shawn-

            Thank you for asking about your Honda Civic. Yes, the BlueDevil Oil Stop Leak would be able to seal the valve cover leak you’ve described. You should expect to see results after 100-200 miles of driving.

            Thank you!

            -BDP



    • Dinah Colegrove on July 28, 2020 at 8:20 pm

      Question. I H have a 2011 Chevy Malibu which used synthetic oil. Will you product work on my car.. As far as I know, I did not have a leak, but just had the oil chanbed and the said I have a valve cover, level 2 leak.

      • BlueDevil Pro on July 29, 2020 at 8:03 am

        Dinah-

        Thank you for asking about your Chevy Malibu. Yes, the BlueDevil Oil Stop Leak is safe and compatible to use with synthetic oil. You should expect to start seeing results after approximately 100-200 miles of driving.

        Thank you!

        -BDP

      • Bernice Botha on September 5, 2021 at 12:00 pm

        Hallo i have ford fiesta 1.6 diezel i hade the tapetcover seal replaced about 2 weeks ago but know it leaks oil like an open tab will this product work. The same macanic told me to get a knew tabet cover for the leak to stop but it is just to expensive. Will it work

        • BlueDevil Pro on September 8, 2021 at 8:39 am

          Bernice-

          Thank you for asking about your Ford Fiesta. Based on your description, we recommend using the BlueDevil Oil Stop to help stop the loss of oil you’re experiencing. If the valve cover gasket was just replaced, it’s possible the leak is coming from a different component and would be worth trying the product on. Expect to start seeing results after 100-200 miles of driving.

          Thank you!

          -BDP

  2. Jerry Fojtik on April 24, 2014 at 5:14 pm

    I have a 1992 dodge shadow with a headgasket leak. I bought a bottle of your Blue Devil headgasket stop and go sealer. I flushed the cooling system out througlhly, filled it with water and flushed it again. I replaced the anti freeze coolant with new coolant after allowing the engine to cool down. I then started the engine, turned on the heater and added the Blue Devil product according to the directions. The car engine did stop smoking, however it has a miss. I replaced the sparkplugs, however the missing would not go away. I took the car to a mechinac and he said that two of the cylinders had low compression. He recommended replacing the head gasket. Since the engine is not leaking coolant and the engine is not overheating, but it has the missing. Any suggestions.

    • BlueDevil Pro on April 24, 2014 at 6:09 pm

      Please contact our technical support team at 888.863.0426 so that we may discuss your vehicle in more detail. We would be happy to help troubleshoot the problem at hand.

      • Molly Daniels on January 29, 2015 at 2:41 pm

        Mechanic says I need a cover gasket change on 2 gaskets….I do not have oil problems, overheating or other noticeable signs…no leakage on ground…can there still be a problem? I have a 2007 dodge mini van…

        • BlueDevil Pro on January 30, 2015 at 2:22 pm

          Molly-

          It is still a possibility even though you do not visibly see any leakage onto the ground. It may be in the early stages and that is why there are no clear symptoms up to this point.

          You could always have your Dodge checked out by a different mechanic for a second opinion.

          Thank You!

          -BDP

      • Gary maes on June 10, 2021 at 1:27 pm

        I have a 440 mopar 1969 oil is leaking out of valve cover on top will stop oil leak work for this small leak.

        • BlueDevil Pro on June 10, 2021 at 1:59 pm

          Gary-

          BlueDevil Oil Stop Leak is intended to treat rubber seals/gaskets. If the leak is coming from the valve cover gasket, the product would be able to seal that kind of a leak. You should expect to start seeing results after 100-200 miles of driving.

          Thank you!

          -BDP

  3. Gary Bailey on May 9, 2014 at 3:27 pm

    Off topic of gasket, but I’m looking for a product that I can add to my wheel hubs to help seal leaks. I use a hub oil, which seems to be close to gear oil viscosity. Will your oil stop leak, or rear main seal stop leak work in this application? Thanks for any help you can provide.

    • BlueDevil Pro on May 12, 2014 at 2:49 pm

      Our chemicals are used to seal internal cooling & oil system leaks. Unfortunately, We don’t have a product that could help your situation.

      • justin on March 24, 2015 at 12:45 pm

        I have a 2001 v6 Nissan frontier the dealer said I had a right head gasket seeping and valve cover gasket leaking, what should I do

        • BlueDevil Pro on March 25, 2015 at 9:17 am

          Justin-

          Please contact our tech support team at 888-863-0426. We would like to ask you a few questions so that we may recommend the best products for sealing your leaks.

          Thank You!

          -BDP

      • Ray Floyd on August 2, 2020 at 4:04 pm

        Will this product cause any engine harm in a bmw turbo engine?

        • BlueDevil Pro on August 3, 2020 at 9:28 am

          Ray-

          The BlueDevil Oil Stop Leak is 100% safe to use and would not cause any harm to the turbo or engine itself. The product does not harden or thicken in anyway, so it would not cause any adverse affects.

          Thank you!

          -BDP

  4. brenda steed on July 9, 2014 at 4:56 pm

    Question should i get a oil pan, valve cover leak for 1999 chevy montecarlo.
    I checked the cover the screws are all tight and I see no oil around them also
    i do not smell oil or have smoke from that area?

    thanks

    • BlueDevil Pro on July 15, 2014 at 3:39 pm

      The BlueDevil Oil Stop Leak would be the best product to use to stop the valve cover gaskets from leaking. You should add one 8 ounce bottle.

  5. anthony on July 12, 2014 at 7:37 pm

    Hey you guys. I have a 2003 audi a4 1.8t. And recently I had my vavle cover gasket fix. But now I have four miss fires and changing the spark plugs.When I rremoved the coil packs there was oil once again. Why Would the vavle cover be leaking again in two weeks??

    • BlueDevil Pro on July 15, 2014 at 3:40 pm

      It is not common for the valve cover to start leaking so quickly after having it fixed. First, you may want to check with the dealer or mechanic that worked on your Audi to see if the work is warrantied. If it is not, BlueDevil Oil Stop Leak will work in stopping leaks from the valve cover gaskets. Feel free to contact our technical support team at 888.863.0426 with any further questions.

      • Kevin on March 23, 2016 at 8:28 am

        I have Honda Accord 2000 and it has leak on the valve cover and it was smoking a lil bit but not too much and it’s burning oil you think the valve cover is the caused of burning oil and smoking? Thanks

        • BlueDevil Pro on March 30, 2016 at 12:06 pm

          Kevin-

          Yes, a leaking valve cover can sometimes leak onto your hot exhaust system and will cause some smoke and a possible burning smell. We recommend adding 1 bottle of BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/) to stop your oil loss. You can expect to start seeing results after about 100 miles of driving.

          Thank you!

          -BDP

        • Maureen Gingras on June 11, 2021 at 6:05 pm

          Hi I was just told that I have to have my valve cover gasket replaced because of a leak. This is the 3rd one I have had to replace in the past 4 years. First of all this seems very unusual, its like there is another problem that nobody seems to be finding. If I use your product do you think this will help. I have a 2009 ford focus. Thanks

          • BlueDevil Pro on June 14, 2021 at 8:20 am

            Maureen-

            Thank you for asking about your Ford Focus. BlueDevil Oil Stop Leak is intended to revitalize and recondition rubber seals/gaskets. It would not have much effect on a newer rubber. Based on your description, we recommend getting a second opinion, as it does seem unusual to keep replacing the valve cover gasket multiple times in such a short span.

            Thank you!

            -BDP



  6. Desmond on September 24, 2014 at 10:16 pm

    I have a 99.navigator 5.4L i took it to the shop & they said it was the coil pack but when he took it out it was filled with oil keep in mind the car starts and run for a few seconds then stop he then told me the valve cover gaskets were bad thats why its leaking oil in the coil packs the job is very expensive can someone help please tell me if this will solve my problem

    • BlueDevil Pro on September 26, 2014 at 12:42 pm

      Desmond-

      The BlueDevil Oil Stop Leak will stop a valve cover leak. However, it sounds like the leak or leaks you are experiencing may be fairly substantial. It would not hurt to add a bottle of the Oil Stop Leak; if that doesn’t work then you may be looking at a hard part repair.

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

  7. Austin B on October 27, 2014 at 1:40 am

    I have a 1989 Corvette that I’m having issues with a leaky valve cover. Taking the valve covers of would be an absolute nightmare. I loosened up one cover and the gasket looks rough. M what product would be best for this pproblem?

    • BlueDevil Pro on October 27, 2014 at 2:01 pm

      Austin-

      The best product for you to use is the BlueDevil Oil Stop Leak. You should add 1 ounce of BlueDevil per 1 quart of capacity.

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

      -BDP

  8. Collene on October 29, 2014 at 3:40 pm

    Hi, I’ve just been informed by the dealer service dept that my 2008 Mini Cooper has a Valve Cover Gasket Leak. Actually, they left me a msg stating the leak they found in April was still there; however, I didn’t own the car until May–meaning, they sold me a car with a known maintenance issue. Not amused.

    The dealer obviously suggested replacing the part. However, rather than replacing it, your BlueDevil product sounds like it would do the trick. This a “stupid question”, as I am by no means a mechanic, but…where would I add this product, and is this something I could do on my own without mechanic tools?

    -Just a girl who doesn’t want to get swindled (more) by the dealer

    • BlueDevil Pro on October 30, 2014 at 10:38 am

      Collene-

      First off, we are sorry to hear that you are having to deal with an oil leak. Fortunately, the BlueDevil Oil Stop Leak will stop leaks coming from the valve cover gaskets. You will add the full 8 ounce bottle into your engine oil; it should be added directly through the cap where your oil is normally added.

      The product can be purchased locally through a number of automotive parts stores such as: Advance Auto Parts, AutoZone, O’Reilly Auto, NAPA, etc.

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

      -BDP

      • Martha on October 30, 2015 at 1:15 pm

        I have a similar problem. But my oil leak is very severe! I have a giant black oil spot in my driveway. When I’m driving, and I stop at a light, oil leaks on my exhaust and causes billows of smoke from all sides of my car! I have to put oil in every week. Also, my car misses. It is a 1997 Nissan Maxima, good car/engine. But I am afraid I’m gonna mess up the damage the engine if I don’t fix it soon. Any solutions? A novice car maintenance woman.

        • Martha on October 30, 2015 at 1:19 pm

          I recently found out my car has s power steering leak as well, not sure how to fix that. Along with adding oil in my car weekly, I also add power steering fluid.

          • BlueDevil Pro on November 4, 2015 at 10:07 am

            Martha-

            As long as you are not losing fluid too quickly, you would be able to use the BlueDevil Power Steering Stop Leak. Based on your previous post, it seems like the oil leak you are experiencing is more severe than the power steering leak, so we would recommend bringing the vehicle to an ASE certified mechanic to have the oil leak repaired first before trying to deal with your power steering leak. Feel free to contact our technical support line at 888-863-0426 with any questions.

            Thank you!

            -BDP



        • BlueDevil Pro on November 4, 2015 at 9:56 am

          Martha-

          Thank you for asking about your Nissan Maxima. Based on your description, unfortunately, we would not recommend using BlueDevil in this situation. The product is intended for leaks that are seeping or dripping. It seems like you may be losing oil a little too quickly in order to get the benefit of the product. A hard part repair may be your best option at this point.

          Thank you!

          -BDP

  9. mohammed on November 17, 2014 at 8:01 pm

    i have a 2006 audi a4 quatto, when iwas on the highway the car stopped and wouldnt turn back on, after that i got a new battery but still nothing , i open the hood and ny the head gasket or cover the metal piece was cracked and oiled leaked from there, how can i fix this and do i need a new engine ?

    • BlueDevil Pro on November 20, 2014 at 1:19 pm

      Mohammed,
      Thanks for your question, and we’re sorry your Audi is giving you problems. It sounds like you have quite a few things going on. Without being able to see the damage it’s hard to give you an idea of the problem so it would definitely be worth taking your car to a mechanic. If your car shutting off on the highway is related to the cracked metal cover and oil leak you probably have a pretty major problem on your hands like a blown timing belt or chain. Hopefully they are unrelated and you simply need a new valve cover, gasket, and an oil change and your starting issue is indeed electrical. If your oil leak is due to a cracked valve cover unfortunately BlueDevil products won’t be able to help.

  10. KV on December 8, 2014 at 5:04 pm

    Can this stop leak be used with Synthetic oils?

    • BlueDevil Pro on December 9, 2014 at 2:36 pm

      KV-

      Yes, the BlueDevil Oil Stop Leak is compatible with synthetic oils.

      -BDP

  11. latasha on December 28, 2014 at 1:11 pm

    Hi my 97 grand prix is experiencing the same issues that were stated above…i know that my engine has no blown head gasket. I have had my oil pump replaced and some other minor repairs. Now I have purchased the valve cover gaskets but not had them put on. I know that my car needs two gaskets. My question is will bluedevil provide some help until I can get the gaskets put on.

    • BlueDevil Pro on January 8, 2015 at 10:20 am

      Latasha-

      Yes, BlueDevil Oil Stop Leak will help stop leakage from the valve cover gaskets.

      -BDP

  12. latanya on December 30, 2014 at 12:46 pm

    I just had a starter put in my car and the dealer is stating that my starter went out because of the valve cover gasket. I guess the oil is leaking on my starter. Is this true? The dealer states that if I don’t get the gasket fixed immediately then it could ruin my starter. Is this true?

    • BlueDevil Pro on January 8, 2015 at 1:50 pm

      Latanya-

      There is a very small possibility but it is unlikely. Starters are designed to be liquid tight so that they work in all weather conditions. As such, I wouldn’t think oil would penetrate the case any more than rain or other road chemicals thrown up onto the starter. With that said, the oil leak is costing you money in wasted oil and when mixed with road debris over a period of time can cause your engine to run warmer than it should.

      For the oil leak, we recommend that you add a bottle of BlueDevil Oil Stop Leak. It can be seen here: http://store.gobdp.com/oil-stop-leak-49499/

      Thank You,

      BDP

  13. Jorge on January 28, 2015 at 6:24 pm

    I have a 2004 545i bmw and i was just told that both my valve covers are leaking. Wat would you recommend using on it? Also how long does the car have to run until the sealer starts working?

    • BlueDevil Pro on January 29, 2015 at 9:33 am

      Jorge-

      We recommend using a bottle of the BlueDevil Oil Stop Leak to stop the leak from your valve covers. You should notice results after about 100 miles of driving.

      -BDP

  14. Nate on February 6, 2015 at 10:27 pm

    I have a 2003 ford escape and recently took it in to a ford dealership for an oil change (its not under warranty or anything just near where I work.) They told me there was leak that they said is from the valve cover gasket. They gave me a lengthy list of repairs and damaged components due to this leak totaling $3400. (power steering pump, oil pan gasket, alternator, front timing gasket…)
    I would like to know if its accurate or I’m getting jerked around. What could be damaged by a leak/crank case empty of oil?

    • BlueDevil Pro on February 11, 2015 at 4:22 pm

      Nate,

      Thanks for your question about your 2003 Ford Escape. I’m sorry you got such a high repair bill the last time you took it in. If your Escape was run low on oil it could have done a significant amount of internal damage to your engine, but none of the components you listed as needing repaired by the shop are internal engine components. Also, if those types of things were damaged your Escape would be making a lot of noise and probably running poorly.

      If your valve cover gasket is leaking oil it will drip down over the rest of your engine and can make it difficult to identify any other leaks, such as your oil pan gasket and timing cover gasket. Our recommendation would be to seal your valve cover gasket leak either by replacing the gasket or using BlueDevil Oil Stop Leak as described in the article you read. Once the leak is sealed, use engine degreaser to remove the old oil that has leaked from the valve cover gasket and clean up your engine. Be careful around your alternator as you cannot get that wet or use degreaser on it. Once your engine is clean, you can look to see if any other gaskets are leaking.

      Using BlueDevil Oil Stop Leak will seal the leaks you have coming from any of the gaskets so it should be a one-stop fix to all of your engine oil leaks. It is possible that the leaking oil damaged your alternator, however if this is the case you should have a battery light illuminated on your gauge cluster.

  15. Joe on March 6, 2015 at 10:17 pm

    Hello
    I have 2004 Audi A4 V6 3.0 I had massive oil leak from valve cover area, even I replace the cover gasket but it was leaking and oil dropping over exhaust and smoked like crazy , So I googled oil leak and I came to this website , to be honest I thought it snake oil at first , I thought well I give it try, went to local auto zone and bought bottle and poured BlueDevil stop leak in the engine and ran it car for 1:30 idling , well I could not believe my eyes, I would say 95% was smoke was gone and no more leak, although the was still was very very small smoke was coming from rear on driver side engine. the instruction said it needs to run 1-2 hours, on massive leak it may take 2 days driving around to cure it, to be honest it was getting late at night and dark I only ran for 1:30 minutes, I am give it more time tomorrow, My question is this permeant ? also if the little small leak does goes away , can I put another bottle to cure it!!! Your product make believer of me !!! Thank you

  16. mack stanford on April 6, 2015 at 1:05 pm

    I have a 98 lincoln continental and i believe i have a bad valve cover gasket. The engine smokes a little from the front valve cover and will overheat after about 20 minutes of driving. What could cause this to happen?

    • BlueDevil Pro on April 6, 2015 at 2:33 pm

      Mack-

      A valve cover leak would not normally cause a car to overheat unless the oil level has become extremely low. The symptom of overheating is normally more associated with something cooling system related; it could be a head gasket leak, water pump failure, a bad fan switch, etc.

      You may want to take your vehicle into a certified shop or a Lincoln dealer to have it diagnosed.

      Thanks!

      -BDP

  17. Teri on April 23, 2015 at 10:12 am

    I just bought a 2014 Honda Crosstour and it only has 2,100 mile on it. My car was leaking oil and I was advised by the dealer that it is a valve cover gasket leak. they are repairing it but I am wondering if this may have ongoing issues? I am really worried about this brand new car having this issue. I was told that if was a defective part and all should be good after the repairs. what it your opinion?

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

      Teri-

      If the repair is done properly then this should not become an ongoing issue. We recommend that you keep a close eye on it so that if the problem does come back you are able to take it back to the dealership to be warrantied.

      Thank You!

      -BDP

  18. Pam Voelz on May 1, 2015 at 1:34 pm

    I was taking my 2004 jeep to a mechanic and I had to have a whole new transmission put in. As soon as I got it back It smelled like exhaust everytime I would drive it. It was really bad. The girl in our office took her car and her mothers car to the same mechanic. After he worked on both of her cars her and her mother smelled the same thing. I drove mine for awhile thinking it was something to do with the transmission from him working on it. I started have some smoke come out of the hood when I would drive it. So I took it to the auto dealer to check it out. He told me I really need 2 new Valve covers. That was the smell and the smoke problem. After talking with my about my jeep she said that was the same thing wrong with both of her cars. Interesting. Could that mechanic have done something to the valve covers so we would have to come back in?

    • BlueDevil Pro on May 5, 2015 at 3:53 pm

      Pam,

      Thanks for the question about the valve covers on your jeep and your co-worker’s cars. There would be no reason to touch the valve covers during a transmission replacement on a jeep. However, depending on how he removed the transmission, it is possible that the motor shifted enough that the valve covers rubbed on another component or the firewall of your jeep which could have loosened them enough to leak, but it certainly would have been accidental. There is really no way to sabotage a gasket, the only possibility would be if they loosened the bolts on the valve covers, that could cause a leak but could easily be checked and fixed by tightening the bolts again.

  19. Mike on May 31, 2015 at 2:59 am

    Hey guys I’ve a 05 maxima , my car is smoking after start up and also there is a big noise sounding in my engine before I ve change 2 valve cover but still adding oil every 3 days it’s seem like my engine is burning th oil cause my exhausts is black I took it to th shop and my mechanic told m th engine is dead which I don’t believe cause it still drivable after a add oil need help before any others expenses thanks

    • BlueDevil Pro on June 11, 2015 at 1:39 am

      Mike,

      If your car is smoking and you’re having to add oil then it sounds like you are burning oil. Car’s usually burn oil either from leaking valve stem seals or worn piston rings. Fixing either of these problems requires disassembling a significant portion of the engine or rebuilding it entirely. Also the big noise you are describing could be many things but usually is a sign of a worn bearing somewhere in your engine. Worn bearings also usually necesitate an engine rebuild. It is possible that you can still get more miles out of your engine, but it sounds like significant repairs will be needed to stop the oil leaks and noise.

  20. Bret on July 25, 2015 at 5:20 pm

    My 2005 Chrysler Crossfire has a valve cap leak. Will your product fix this?

    • BlueDevil Pro on August 3, 2015 at 12:29 pm

      Bret-

      Unfortunately, the BlueDevil Oil Stop Leak is not intended to work for a valve cap leak. The BlueDevil Oil Stop Leak is specifically designed to stop oil loss coming from around any rubber seal or gasket.

      Thank You!

      -BDP

  21. Gerald on July 31, 2015 at 7:34 am

    I recently experienced fumes coming out of my vents and my SUV losing ant-freeze. I assumed it was the heater core and also I was experiencing some missing firing. So I took my 2001 Lincoln Navigator to the local shop to get my heater core replace and to change the coils that where misfiring. While the shop was changing the coils they notice that there was anti-freeze on the coils and told me that it was cause for the misfiring. The shop told me that my was head gasket is blown. I checked around for different options and a friend told me about the BlueDevil Pour-N-Go. I went to my local auto parts store and ask the clerk which size to use since I have V8 either white label or yellow label (the bigger bottle). He told me the yellow label is better than the white label, but the yellow requires you to be mechanically inclined. The clerk told me the white label will work too, so I purchased the white label. I went to do further research on the BlueDevil and notice that the white label is for use in 4 or 6 cylinder engines. Do BlueDevil Pour-N-Go (white label) work on V8 engines?

    • BlueDevil Pro on August 4, 2015 at 2:46 pm

      Gerald-

      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. Based on your capacity, you will be using 32 ounces either way (if using Pour-N-Go you would need 2 full bottles).

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

      Thank You!

      -BDP

  22. Jessica on August 28, 2015 at 7:58 pm

    I have a 1997 Toyota Camry and I recently took it in to have exhaust work done, during inspection I was told I have a valve cover gasket leak and a cam seal leak. Also they said the spark plugs were sitting in oil. Will Blue Devil OIl Stop Leak fix my leaking problems?

    • BlueDevil Pro on September 3, 2015 at 2:47 pm

      Jessica-

      Yes, the BlueDevil Oil Stop Leak works on both valve cover gasket & cam seal leaks. Once the product is added you can expect to notice results after about 100 miles of driving.

      Thank you!

      -BDP

  23. Varin on October 26, 2015 at 1:42 am

    2005 Acura TL, smoke coming from under the hood. Car does not show if engine is over herring.open the Binet and found smoke come from rear spark plug area. By carefull examine found ignestion coil is leaking and causing smoke. Can your product help me controlling this leak and smoke?

    • BlueDevil Pro on October 31, 2015 at 12:15 pm

      Varin,

      Thanks for your question about your Acura TL. Based on your description it doesn’t sound like you have an oil leak as much as a faulty ignition coil. We would recommend replacing that ignition coil first.

      If it is the seal around the ignition coil that is bad and it is oil burning on your exhaust manifold, then yes, BlueDevil Oil Stop Leak (available here: http://store.gobdp.com/oil-stop-leak-49499/) will stop the leak.

      Thanks again for your question!
      -BD Auto Pro

  24. Evelyn on January 19, 2016 at 2:34 pm

    Hi I have a 95 Montero LS that I purchased a couple months back. The truck runs amazing, but I have a leak and I’m guessing that it is the valve cover gaskets. There is no oil under on the ground, but after I drive it and get out I can smell oil. There is signs of oil around the valve cover gaskets. But again no drips or puddles underneath. Will your product help? I would change them myself, but to many other parts to remove for me now since winter is here in Ct.

    • BlueDevil Pro on January 21, 2016 at 12:32 pm

      Evelyn-

      Thank you for the question about your Montero. We recommend adding 1 bottle of BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/) to help stop any leaks or seepage around your valve cover gaskets. Once the product is added you should start to notice results after about 100 miles of driving.

      The product can be purchased locally through AutoZone, Advance Auto Parts, O’Reilly Auto, NAPA, and many other auto parts retailers.

      Thank you!

      -BDP

  25. joseph on February 25, 2016 at 9:33 pm

    i have a 1992 btw 525i and i noticed the top of my engine cover by the cap is wet and looks like oil is on it. not a lot or any dripping to the ground. what could be the cause of this? i just changed my oil a month ago and my oil is already low again.

    • BlueDevil Pro on March 11, 2016 at 10:25 am

      Joseph,

      Thanks for your question about your 525i. If the only oil you see is around your oil cap it could simply be that your oil cap was left a little bit loose when you had your last oil change done. If your oil cap is on tight, then the other possibility is that you have a leaky valve cover gasket. Try removing the top engine cover to see if you can find further evidence of a leak. If it is a gasket or seal leaking you can use BlueDevil Oil Stop leak (Available here: http://store.gobdp.com/oil-stop-leak-49499/) to seal the leak.

      Thanks again for your question!
      -BD Auto Pro

  26. Russel on March 26, 2016 at 1:42 am

    Hi, I have a Chevy Aveo with a tappet cover leak.I replaced the gasket without using a sealer, however, it then begun to leak after a few rides. Was I suppose to use a sealer in addition to the gasket and will your product solve the leak.Regards.

    • BlueDevil Pro on March 30, 2016 at 11:59 am

      Russel-

      You normally do not have to add an oil additive after the seal is replaced. Due to the fact that you are currently losing oil, we recommend adding BlueDevil Oil Stop Leak to help stop any oil loss you are experiencing. You can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

  27. Julia July on April 10, 2016 at 2:08 am

    Hi I have a 1979 Ford econoline and I had a friend replace the valve cover gaskets but they are still leaking quite a bit… sometimes when I come to a stop or press the break hard it will die… is my van dying realated to the leaking gaskets? Is there anything else in that area that could leak? Or could he have not gotten them on good?

    • BlueDevil Pro on May 10, 2016 at 8:31 pm

      Julia,

      Thanks for your question about your Ford Econoline. If your valve cover gaskets are still leaking even after they’ve been replaced then your valve covers may be warped from old age and you may consider replacing those as well.

      It doesn’t seem likely that your van dying is related to the leaking valve cover gaskets. You might start with a regular tune up including new spark plugs, distributor cap and rotor and adjusting the carburetor. Since you mentioned it dying when you push the brakes you may have a vacuum leak that is causing the problem and a good place to start would be in the hose going from the intake to the brake booster.

      Thanks again for your question!
      -BD Auto Pro

  28. L B on April 26, 2016 at 10:49 pm

    I have a 2009 Acura TL , the dealer state that my valve cover gasket is leaking on the muffler, when I drive about 20 to 25 minutes you can smell a burning smell when I reach my destination. And two day ago it started to leak found small amount of oil on the ground where I park, will Blue Devil seal the leak and is it safe to put in my vehicle ?

    • BlueDevil Pro on April 27, 2016 at 9:44 am

      L B-

      Thank you for asking about your Acura TL. Based on your description, the BlueDevil Oil Stop Leak would be able to seal the leak from your valve cover gaskets. The product does not harden or thicken in any way, so it would not have any adverse affects on the system. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

  29. christine on June 5, 2016 at 2:23 pm

    I have a 2006 Fusion with 46,ooo miles Its been a good car until I started having a engine light come went to auto zone and bought a new battery once I told them the trouble.
    after that I noticed a watery substance not oily substance dripping on the under the right side of the car. Called them and they said its the a/c. A week later I saw more drrips but now they looked and felt some oily. I took it for a check up and they want to change timing cover gaskets oil pan gaskets and oil pan gaskets.What should I do ? Help Damsel in distress!

    • BlueDevil Pro on June 6, 2016 at 2:57 pm

      Christine-

      Thank you for your question about your ’06 Fusion! Based on the diagnosis you received we recommend adding 1 bottle of BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/) to stop the various oil leaks the vehicle has. Once the product is added you can expect to start seeing results after about 100 miles of driving.

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

      Thank you!

      -BDP

  30. Kelly on August 8, 2016 at 2:44 am

    I have a 05 Mitsubishi diamante the man told me that the valve cover gasket was put on wrong that’s why it’s leaking oil… have a min amount of smoke when I drive and I can kinda smell the oil bruning off from leaking….and it might leak on the ground… should I use the product or buy a new cover?? Please help

    • BlueDevil Pro on August 9, 2016 at 3:38 pm

      Kelly-

      Thank you for asking about your Mitsubishi Diamante. Based on your description, we would recommend using the BlueDevil Oil Stop Leak. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

  31. Desmond on November 2, 2016 at 6:14 pm

    I have a 09 BMW 650I. It is shooting out a puff of white smoke from the exhaust, but only when I am pressing the gas pedal from a complete stop. I was told that it is Valve stem seal. Also, my brake vacuum pump is leaking oil, but the pump itself isn’t bad. Would your product help these issues?

    • BlueDevil Pro on November 8, 2016 at 10:26 am

      Desmond-

      Thank you for asking about you BMW 650i. White smoke from the exhaust is a tell-tale sign of a blown head gasket. The BlueDevil Oil Stop Leak is only intended for the rubber seals/gaskets in the system and would not treat a brake vacuum pump but, would treat a leaking valve stem seal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  32. Caleb Schrock on December 16, 2016 at 11:14 am

    i have a 93 chevy 4.3 v6 and my rear main seal is going out. My valve covers are leaking also so will i need to add just the oil stop leak or do i also need the rear main seal stop leak

    • BlueDevil Pro on December 16, 2016 at 12:21 pm

      Caleb-

      Thank you for asking about your Chevy. The BlueDevil Oil Stop Leak is a universal application, and would treat leaking oil pan gaskets, valve cover seal, rear main seal, etc. where as the BlueDevil Rear Main Sealer is specifically formulated for the rear main seal. If you are not 100% sure where the leaks are coming from or if you have multiple leaks, the Oil Stop Leak is the product you would want to use.

      Thank you!

      -BDP

  33. Tyla Paul on February 8, 2017 at 7:13 pm

    Got timng tensiors chan fixed only 98 infiniti wasn’t leaking before NW after getting fixed itS leaking oil..i was told by repair shop it’s NOW the valve covers n oil pressure sensor tch which is a different part of engine could that be possible or could they have affected it bring that is wasn’t leaking before hand and also would blue devil help

  34. Winnie Matthews on March 26, 2017 at 8:00 am

    Hi I have a 1997 buick lesabre. Just had intake manifold done , oil change radiator fixed now i smell burnt oil. I called the mechanic back says I have leaking gaskets cant imagine why they didn’t tell me before. After spending 3 gram other things were done to pass inspection. Will your product help?

    • BlueDevil Pro on March 27, 2017 at 11:06 am

      Winnie-

      Thank you for asking about your Buick Lesabre. Based on your description, we recommend using the BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/) for your leaking valve cover gaskets. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

  35. Khan on March 31, 2017 at 11:49 pm

    i have leak in Toyota Camry 1999 oil pump seal its leaking only when engine is running does this blue devil fix the leak ? How much chances

    • BlueDevil Pro on April 3, 2017 at 11:59 am

      Khan-

      Thank you for asking about your Toyota Camry. Based on your description, we recommend using the BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/). You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

  36. Jeremy Bundgard on May 9, 2017 at 11:00 am

    I have a 2001 Nissan Xterra that’s valve covers are leaking. I notice it when I stop oil is dripping ever so slightly on the manifold it starts smoking 2-5 minutes after I stop the engine. I can also see where the oil residue is on the valve cover. From reading through all these reviews it sounds like my Xterra would be a perfect candidate for your Oil Stop Leak. So I am going to give it a try.

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

      Jeremy-

      Thank you for asking about your Nissan Xterra. Based on your description, you are absolutely correct about your vehicle being a perfect candidate for the BlueDevil Oil Stop Leak. Feel free to contact our technical support team at 888-863-0426 with any questions.

      Thank you!

      -BDP

  37. Thanks on May 27, 2017 at 3:32 pm

    Does blue devil stop leaks coming from a vacuum pump? I have a 2007 Volkswagen rabbit 2.5l

    • BlueDevil Pro on May 30, 2017 at 4:01 pm

      Thanks-

      Thank you for asking about your Volkswagen Rabbit. Unfotunately, we do not manufacture a product intended to stop a vacuum pump leak. A hard part repair may be your best option.

      Thank you!

      -BDP

  38. GRIGORIS on July 11, 2017 at 5:49 am

    Dear sir/madam, I have a speedboat with Mercruiser 3.0L 4cyl 1998, with confirmed valve cover gasket leak. Is the oili selant you suggest in this article suitable for marine use? Will it make any harm or blockage in the internal parts of the engine?

    • BlueDevil Pro on July 11, 2017 at 8:59 am

      Grigoris-

      Yes, the BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/) is safe and compatible to use on your speedboat with Mercruiser 3.0L engine. The product does not harden or thicken in anyway, so it would not have any adverse affects on the engine. You should expect to see results after about 1-2 hours of operation.

      Thank you!

      -BDP

  39. Peyton on August 16, 2017 at 1:12 pm

    I have a John’s Deere gator 6×4 with a yanmar Diesel engine that has developed a leak around the valve cover. Would this product stop the leaking

  40. clarisa on September 5, 2017 at 4:27 pm

    Hi,

    I have recently bought a 1995 BMW 325i, I’ve noticed an oil leak on my driveway. I asked the previous owner if they have been any leak underneath, he said that we should keep driving the car and not let it sit for long time. He also mentioned me that he had a guy who looked into it and think that the top gasket needs to be replaced. If the top gasket need to be replace, is this the reason why the car is leaking oil? if I use your product, will this stop the oil leak? is the top gasket same as head gasket? I’m a girl and I don’t know anything about cars! Please I need help!

    • BlueDevil Pro on September 6, 2017 at 9:54 am

      Clarisa-

      Thank you for asking about your BMW 325i. Based on your description, we recommend using the BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/). The BlueDevil Oil Stop Leak is the more concentrated product and is the universal application that will work for various oil leaks such as oil pan leaks, rear main leaks, valve cover gasket leaks, etc. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  41. Rayboyusmc on September 30, 2017 at 9:44 am

    I have a 2005 Chrysler Crossfire that has had a problem with a small oil leak somewhere on the valve cover. It is just enough to occasionally get the burnt oil smoke smell while driving and then is gone. They replaced the seal about 9 months ago, but it started again. The car only has 43,000 miles on it, but this appears to be a common Crossfire issue.

    Will Blue Devil seal this? Can I add it to synthetic oil? Will it harm the engine oil viscosity at all and harm the engine?

    Thank you

    One more thing I forgot. Do I have to drain any of the oil out, or can I add Blue Devil with the oil level just about at the full mark?

    • BlueDevil Pro on October 2, 2017 at 10:20 am

      Ray-

      Thank you for asking about your Chrysler Crossfire. Based on your description, we recommend using the BlueDevil Oil Stop Leak (http://store.gobdp.com/oil-stop-leak-49499/). The product is compatible and can be added with synthetic oil. The product does not contain any petroleum distillates, so it would not affect the oil viscosity. Also, it does not harden or thicken in anyway, so it would not adversely affect the engine or the system itself. One 8 oz. bottle will treat 4-6 quarts of oil. If you are at the full mark, you may want to allow for enough room to add the 8 oz. of the product.

      Thank you!

      -BDP

  42. Kenneth on January 8, 2018 at 2:28 am

    I have a 2007 Ford Edge It leaking oil on manifold and smoking .when I’m driving I do not see the smoke until I come to stop a mechanic told I need to replace vavle cover gasket. Can I use blue devil also just the back is leaking

    • BlueDevil Pro on January 8, 2018 at 9:43 am

      Kenneth-

      We recommend applying 1 bottle of BlueDevil Oil Stop Leak to stop the oil loss. Once added you can expect to start seeing results after approximately 100 miles of driving.

      Feel free to contact us with any questions.

      Thank you!

      -BDP

  43. Dan Martineau on February 7, 2018 at 9:00 am

    Was told I had a valve cover gasket leak so I used your Pour n-Go head gasket sealer into the radiator per directions. Questions:

    1) Was this the correct product to use (versus the Oil Stop Leak) ?

    2) should I now change the oil to get what coolant may remain in the oil pan/ system?

    • BlueDevil Pro on February 7, 2018 at 10:10 am

      Dan-

      The BlueDevil Pour-N-Go Head Gasket Sealer is only intended for water/coolant leaks. The product you would have wanted to use for a valve cover gasket leak would be the BlueDevil Oil Stop Leak. Are you getting water/coolant into the oil as well? If so, you would want to change the oil as soon as possible to prevent engine damage. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  44. Bailey chittum on May 15, 2018 at 9:03 am

    I have a 2005 jeep liberty sport 3.7 L that has a timing cover leak,power steering line leak,transmission cooler line
    Would your product help any of these problems

    • BlueDevil Pro on May 15, 2018 at 10:46 am

      Bailey-

      Thank you for asking about your Jeep Liberty Sport. The BlueDevil Oil Stop Leak would seal the leaks in your timing cover and power steering line. The Oil Stop Leak is a universal application and the more concentrated product, which would seal leaks in the oil pan gasket, valve cover seal, rear main seal, etc. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  45. Devon Marcum on July 12, 2018 at 9:33 pm

    My 88 suburban blew a rod through my oil pan, will blue devil stop leak be able to fix that leak?

    • BlueDevil Pro on July 13, 2018 at 8:44 am

      Devon-

      Thank you for asking about your Chevy Suburban. The BlueDevil Oil Stop Leak is intended to treat rubber seals/gaskets, so it would be able to treat a leaking oil pan gasket. You should expect to see results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  46. Thomas on August 13, 2018 at 11:21 pm

    Have a 2013 BMW X5…was told have a minor valve cover leak. Is Blue Devil safe for my car?
    Thank you…..Tom

    • BlueDevil Pro on August 14, 2018 at 8:40 am

      Thomas-

      Yes, the BlueDevil Oil Stop Leak is safe and compatible to use on your BMW X5. You should expect to see results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

    • Sonny on November 20, 2018 at 10:18 pm

      How long will the Blue Devil Oil stop last for ? Until it leaks again
      Guess needs gasket and valve cover replaced?

      • BlueDevil Pro on November 21, 2018 at 8:30 am

        Sonny-

        Once the product seals, it would be a permanent seal. Feel free to contact our technical support line at 888-863-0426 with any other questions.

        Thank you!

        -BDP

  47. BRUCE RUCK on October 6, 2018 at 2:26 pm

    I HAVE A BMW 528 I , 08. I HAVE A MINOR VALVE COVER LEAK AND WAS TOLD THAT IT NEEDS REPLACEMENT. CAN I SAFELY USE THE BLUE DEVIL STOP LEAK WITHOUT ANY DAMAGE TO THE ENGINE? IS THE PRODUCT SAFE FOR BMW?

    • BlueDevil Pro on October 8, 2018 at 9:20 am

      Bruce-

      Yes, the BlueDevil Oil Stop Leak is safe and compatible to use in your BMW. The product does not harden or thicken in anyway, so it would not damage the engine or system itself. You should expect to see results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  48. birju patel on October 17, 2018 at 10:23 am

    Can i put it in my Acura couz its has gasket front leaking in near the heating plug and it comes out with smoke i can smell oil burning in side when i drive can blue devil repair that until i get it fixed

  49. Sophia on December 10, 2018 at 8:40 pm

    Hi
    I have a 2001 BMW 330ci. I had a smoke test and they told me my valve cover gasket was leaking and needed to be replaced. Which product of yours should I use until I am able to replace it? Thank you.

    • BlueDevil Pro on December 11, 2018 at 10:15 am

      Sophia-

      Thank you for asking about your BMW 330ci. The BlueDevil Oil Stop Leak (https://store.gobdp.com/oil-stop-leak-49499/) would be able to treat a leaking valve cover gasket. As long as the leak is not more than a seep or lightly dripping, you would be a good candidate for the product.

      Thank you!

      -BDP

  50. Marshonna on December 22, 2018 at 1:04 pm

    hello, I just found out that my 2003 infiniti g35 has a valve cover gasket leak. I just got my transmission replaced which was a chunk out of my pocket. I have gotten a few quotes that are a bit much for me especially after this large repair so I wanted to know if this could honestly help me? I really need to drive my car & due to this leak it smokes under the hood which makes me afraid to drive it.

    • BlueDevil Pro on December 27, 2018 at 9:53 am

      Marshonna-

      Thank you for asking about your Infiniti g35. The BlueDevil Oil Stop Leak would be able to treat the valve cover gasket leak you have described. You should expect to start seeing results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  51. William on January 19, 2019 at 11:17 am

    I have a 2006 Ford Fusion. I hit a deer and took it to a mechanic after smelling a burnt smell. They said I have leaky valves. Gonna be a $700+ fix. Will your product fix the problem?

    • BlueDevil Pro on January 21, 2019 at 9:15 am

      William-

      Thank you for asking about your Ford Fusion. As long as the leak isn’t larger than a seep or light drip, you would be a good candidate for the BlueDevil Oil Stop Leak. You should expect to start seeing results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  52. Chandler Dinsmore on April 13, 2019 at 8:33 pm

    Hi there. Is it okay to use both rear main sealer and oil stop leak at the same time? Thank you

    • BlueDevil Pro on April 15, 2019 at 10:21 am

      Chandler-

      BlueDevil Oil Stop Leak is more concentrated and is the universal application that will work for various leaks such as oil pan leaks, rear main leaks, valve cover gasket leaks, etc. Whereas the Rear Main Sealer is specifically formulated for only a leaking rear main seal. If you are not 100% sure where the vehicle is leaking or there seem to be multiple leaks then we recommend using BlueDevil Oil Stop Leak. It is not necessary to add both products simultaneously.

      Thank you!

      -BDP

  53. Darrel Luker on May 20, 2019 at 10:16 pm

    Will BlueDevil Oil Stop Leak help control oil leak from the o rings in the spark plug well? Thank you

    • BlueDevil Pro on May 21, 2019 at 10:01 am

      Darrel-

      Yes, BlueDevil Oil Stop Leak would seal the leaks coming from the O-Rings in the spark plug well. You should expect to start seeing results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  54. Jeff on May 27, 2019 at 2:04 pm

    I went into smog my 2003 ford explorer xls, and the shop said I have a leaking valve cover, it leaks by the back of the cover and when I drive I can smell and see little amount of smoke from the burn of the oil. It’s not alot it doesn’t have a steady drip on the ground or anything. Does your product solidifys an clogs cooling passages or oil passages?

    • BlueDevil Pro on May 28, 2019 at 10:28 am

      Jeff-

      Thank you for asking about your Ford Explorer. The BlueDevil Oil Stop Leak does not harden or thicken in any way, so it would not cause any adverse results. The product works by revitalizing and rejuvenating rubber seals/gaskets. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  55. Donald on May 31, 2019 at 5:25 pm

    Can I use BlueDevil in my 2007 GMC 5.3 V8 my valve pan is leaking on one side.

    • BlueDevil Pro on June 3, 2019 at 9:52 am

      Donald-

      Yes, the BlueDevil Oil Stop Leak is safe and compatible to use on your GMC. You should expect to start seeing results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  56. Janika Brown on June 12, 2019 at 9:37 pm

    I have a 94 Pontiac firebird and my valve gasket cover needs replaced. After 5 minutes my car is smoking under the hood. Will blue devil stop oil leak work?

    • BlueDevil Pro on June 13, 2019 at 10:30 am

      Janika-

      Thank you for asking about your Pontiac Firebird. As long as you are not losing oil too quickly, you would be a good candidate for the BlueDevil Oil Stop Leak. The product would be able to treat leaking valve cover gaskets. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  57. Harold Carlson on June 17, 2019 at 10:57 am

    Have a 2004 Ford Thunderbird V8 that has a slight valve cover leak. Would this work? Thanks.

    • BlueDevil Pro on June 17, 2019 at 11:40 am

      Harold-

      Yes, the BlueDevil Oil Stop Leak would be able to seal the leaking valve cover gasket on your Ford Thunderbird. You should expect to start seeing results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  58. Khadijah Hurt on June 25, 2019 at 5:55 pm

    I have a 2015 Hyundai Sonata! I recently found out I had a valve gasket Leak. The HYUNDAI dealer told me to wait until my next oil change. But I Decided to take it early because when I accelerate my car/engine is making a rattling noise now. HELP WHAT IS GOING ON??

    • BD Auto Pro on June 25, 2019 at 9:22 pm

      Khadijah,

      Thanks for your question about your 2015 Hyundai Sonata. Our guess would be that your valve cover gasket leak has caused a low oil level in your car. If your car has low oil the oil may have low pressure or be hotter than normal causing noise in your valves which could sound like ticking or rattling. It’s also possible the rattling noise is from another problem as rattling noises while accelerating are often due to loose heat shields on your exhaust. Our recommendation would be to fix the valve cover gasket leak and top off your oil to see if that fixes the rattling.

      Thanks again for your question!
      -BD Auto Pro

  59. Flora on August 14, 2019 at 2:21 pm

    We have a 1997 Eurovan and recently had the gasket replaced, but still leaking. t was suggested that we get a new valve cover to stop the oil leak, but VW stopped making them years ago and they are scarce as hens teeth when searching for a used one. We are adding a quart about every 300 miles. Do you think Blue Devil Oil Stop Leak could help us?

    • BlueDevil Pro on August 14, 2019 at 2:32 pm

      Flora-

      Thank you for asking about your Eurovan. The BlueDevil Oil Stop Leak is intended to revitalize and recondition old/brittle rubber seals/gaskets. Unfortunately, the product would not have any influence on a new gasket. Replacing the valve cover may be your best option.

      Thank you!

      -BDP

  60. Garry on January 31, 2020 at 2:12 am

    Hi Guys.
    I live i Perth, Western Australia. I do not recall ever seeing your product Blue Devil Oil Stop Leak, so would like to know if it is available here, and if so, from where and at what price.
    Thank you and regards

  61. Urbano on April 30, 2020 at 10:34 pm

    I just replaced my sparkplugs in my 2002 Ford Explorer V8. Was seeing oil on a few of them. Did some research and some info advised it could be the valve cover. Think Bluedevil could fix the issue?

    • BlueDevil Pro on May 1, 2020 at 10:33 am

      Urbano-

      Thank you for asking about your Ford Explorer. Yes, the BlueDevil Oil Stop Leak would be able to treat leaking valve cover gaskets. You should expect to start seeing improvement after 100-200 miles of driving.

      Thank you!

      -BDP

  62. Luis Gilday on May 7, 2020 at 1:10 pm

    I have a 2010 Jaguar XK, i had recently removed the valve cover and it is now leaking. Does BlueDevil need to be added to each oil change? Also would Liqui Moly engine flush clear or clean away BlueDevil?

    • BlueDevil Pro on May 7, 2020 at 3:33 pm

      Luis-

      Thank you for asking about your Jaguar XK. You should only need to use the BlueDevil Oil Stop Leak one time. It is not the kind of thing that would need to be added with every oil change.

      Thank you!

      -BDP

  63. Mike taylor on May 7, 2020 at 1:56 pm

    have a 2003 Ford Explorer that has a leaky valve cover gasket on the passenger side doesn’t leak a whole lot but is leaking down on the exhaust manifold I just don’t want to spend $400 to have the valve cover gaskets replaced if I don’t have to will blue devil work here?

    • BlueDevil Pro on May 7, 2020 at 3:40 pm

      Mike-

      Thank you for asking about your Ford Explorer. Based on your description, you would be a great candidate for the BlueDevil Oil Stop Leak. You should expect to start seeing improvement after 100-200 miles of driving.

      Thank you!

      -BDP

  64. keisha on May 9, 2020 at 1:22 pm

    We have a 2014 Chevy cruze lt 1.8. We recently noticed the valve cover hasket was leaking so we took it in to get fixed but at the same time there was a coolant leak and the mechanic couldn’t tell where it was coming from. Well its been 3 days since we took it and the valve cover is leaking again. My husband and I noticed coolant somewhere under the engine. What could this be? I was thinking maybe they didn’t follow torque specs for our vehicle? Or is it a head gasket issue?

    • BlueDevil Pro on May 11, 2020 at 9:42 am

      Keisha-

      Thank you for asking about your Chevy Cruze. Did the mechanic suspect a head gasket leak or did he diagnose the coolant leak? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  65. Jason Shallah on October 16, 2020 at 7:39 am

    I have a 07 audi a4 quattro with oil leaking from head cover I can see the stream of oil leaking and I have added the product and followed instructions to the T but its starting to stream again

    • BlueDevil Pro on October 16, 2020 at 9:21 am

      Jason-

      Thank you for asking about your Audi. Is the leaking coming from the valve cover or the valve cover gasket? BlueDevil Oil Stop Leak is only intended to treat rubber seals/gaskets. If the leak is coming from a non-rubber component, unfortunately, the product would not have any affect. If the leak is coming from the gasket, you should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  66. Joshua Herrera on October 29, 2020 at 3:58 pm

    Hello my bmw 335ci is leaking from the valve cover is this what I should use?

    • BlueDevil Pro on October 30, 2020 at 8:34 am

      Joshua-

      Yes, the BlueDevil Oil Stop Leak would be able to treat the leaking valve cover gasket on your BMW 335ci. You should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  67. PR on December 30, 2020 at 12:40 pm

    Will BlueDevil stop the following leaks on a 2008 BMW X5:
    OIL PAN GASKET, FRONT CRANKSHAFT SEAL, VALVE COVER GASKET AND OIL FILTER HOUSING GASKET

    • BlueDevil Pro on December 31, 2020 at 8:55 am

      PR-

      Thank you for asking about your BMW X5. Yes, the BlueDevil Oil Stop Leak would be able to treat all the components you’ve described. As long as you are not losing oil too quickly, you would be a good candidate for the product.

      Thank you!

      -BDP

  68. Steve on January 7, 2021 at 6:14 am

    Hi I have a pfl focus st225. Got lil bit of oil on 1 spark glug. Would this fix it please. Not much oil. Just a lil bit

    • BlueDevil Pro on January 8, 2021 at 10:09 am

      Steve-

      Have you confirmed where the oil leak is coming from? If it is from the valve cover gaskets then we recommend applying BlueDevil Oil Stop Leak to seal the leak. You may have to replace the spark plug as well depending on how contaminated it is.

      Thank you!

      -BDP

      • Steve on January 11, 2021 at 4:55 am

        Thank you for reply. Been told it the rocker cover or spark plug o rings. It’s the 5 pot engine from Volvo. So not a gasket. It’s a sealant instead.

  69. Greg g on January 7, 2021 at 2:46 pm

    My 2008 Nissan Armada is slowly leaking oil from the gasket covers. Mechanic says one has a crack in it. Can Blue Devil seal the crack in that gasket cover?

    • BlueDevil Pro on January 8, 2021 at 10:04 am

      Greg-

      Thank you for asking about your Nissan Armada. Based on your description, we would recommend using the BlueDevil Oil Stop Leak. You should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  70. Matt on January 11, 2021 at 10:50 pm

    Two questions: First, I’ve got a 2006 Toyota 4Runner. Just had the oil changed today. Comments from mechanic say “There is an oil leak from the valve covers, possibly the timing cover. Recommend resealing valve covers and clean engine to see if timing cover is leaking – $480.00” Will this product help my issue.

    Second: My son has a 1970 Volkswagen Bug with the standard VW oil leak. Will this product work on a VW?

    Thanks.

    • BlueDevil Pro on January 12, 2021 at 7:56 am

      Matt-

      Yes, the BlueDevil Oil would be able to treat the leaking valve cover gasket and timing cover gasket on your Toyota 4Runner. As long as the leak(s) aren’t more than seeping or lightly dripping, you would be a good candidate for the product. You should expect to start seeing results after 100-200 miles of driving.
      BlueDevil Oil Stop Leak is safe and compatible to use on your son’s Volkswagen Bug. The product would only have an effect on rubber seals/gaskets.

      Thank you!

      -BDP

  71. Carla Morris on March 18, 2021 at 4:57 pm

    Valve cover gaskets leaking oil (small amounts) in my 2000 Nissan Xterra SE
    3.3 L V-6
    Would this product possibly work to reseal the gaskets? I’m not wanting to shell out $500 plus at this time.
    I do not put many miles on my vehicle … maybe 30-50 a week at the most.
    Thank you for prompt response.

    • BlueDevil Pro on March 19, 2021 at 8:51 am

      Carla-

      Yes, the BlueDevil Oil Stop Leak would be able to seal the leaking valve cover gaskets on your Nissan Xterra. You should expect to see results after 100-200 miles of driving. It does not have to be a continuous drive. You are find to drive the vehicle like you normally would.

      Thank you!

      -BDP

  72. ECS on March 19, 2021 at 9:27 pm

    Hi I have a 2011 Chrysler 200 S 6 Cyn my mechanic says valve covers need to be changed slow leaking, I do smell oil burning and some white smoke comes up when I start driving but goes away pretty quickly, no leaking on ground. Will this be a good choice for me? I’m not ready to pay to replace them yet.

    • BlueDevil Pro on March 22, 2021 at 8:11 am

      ECS-

      Thank you for asking about your Chrysler 200. BlueDevil Oil Stop Leak would be able to treat the leaking valve cover gaskets your vehicle is experiencing. You should expect to stat seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  73. Lisa on June 8, 2021 at 11:44 am

    I have a 2015 Chevy Malibu, I was told by a mechanic that I have an oil pan leak and a valve cover gasket leak. Would Blue Devil help with those leaks, long enough for me to get it fixed near the beginning of July? (About 3 weeks)
    Additionally I use full synthetic high mileage oil in my vehicle.

    • BlueDevil Pro on June 8, 2021 at 2:50 pm

      Lisa-

      Thank you for asking about your Chevy Malibu. Yes, the BlueDevil Oil Stop Leak would be able to treat the oil pan gasket and valve cover gasket leaks you’ve described. The product is safe and compatible to use with full synthetic oil. You should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  74. George Wettlaufer on June 24, 2021 at 8:14 am

    I have a 2008 sts, 4.6 northstar engine; I get a burning smell of oil under the hood, get the odd drip on driveway, nothing significant.
    I can go months without oil level on dipstick changing, but when I drive at high speeds, level drops faster… will blue devil fix this problem.?
    Thank you in advance

    • BlueDevil Pro on June 24, 2021 at 8:20 am

      George-

      Thank you for asking about your Cadillac. Based on your description, you would be a good candidate for the BlueDevil Oil Stop Leak. The product is intended for leaks that are seeping or lightly dripping. You should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

      • George Wettlaufer on June 24, 2021 at 8:42 am

        Thank you for your response, I have been looking more into your product , however from what I have read it doesn’t mention if its safe for full synthetic oil, I use castrol 5w30 full synthetic, is this compatible?
        Thank you in advance

        • BlueDevil Pro on June 24, 2021 at 9:10 am

          George-

          Yes, the Oil Stop Leak is 100% safe and compatible to use with full synthetic oil. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

          • George Wettlaufer on June 24, 2021 at 9:33 am

            Thank you, I will be purchasing some today and will update you of the results….



  75. John raftery on July 2, 2021 at 4:46 pm

    I have a 2008 bmw m3 convertible with a v8 high performance engine. I was told i have a small oil leak and was advised to change the valve gasket which is rather costly. Is your product safe for this engine and effective in stopping the leak?( I also use synthetic 10w-60 oil. Thanks

    • BlueDevil Pro on July 6, 2021 at 8:18 am

      John-

      Thank you for asking about your BMW M3. Yes, the BlueDevil Oil Stop Leak is safe and compatible to use for the application you’ve described. The product can be used with synthetic oil. You should expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  76. Jimmy T on August 13, 2021 at 5:34 am

    Will Oil Stop work on oil leaking from valve cover on a riding lawnmower? I have tried to reseal it multiple times and your product could be my Hail Mary. I’m at the point where I may just shoot it and put it out of it’s misery.

    • BlueDevil Pro on August 13, 2021 at 11:19 am

      Jimmy-

      Yes, the BlueDevil Oil Stop Leak is safe and compatible to use on your riding lawnmower for a valve cover gasket leak. You should expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

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