BlueDevil Products: Blog

How can I Stop My Transmission From Leaking Fluid?

By BlueDevil Pro

Stop transmissino leakHave you ever looked under your car and found that it was leaking some sort of fluid that you didn’t even know your car had in it?  Most of us know engine oil is brown or black, coolant is usually green, but you usually don’t see a red fluid.  Automatic transmission fluid is still oil, but usually thinner than engine or gear oil and tinted red in color.  If you’ve found this under your car, then you most likely have a transmission leak.

To check for a leak in your automatic transmission, you can do a visual inspection to try and find the leak point.  Here are some of the most likely places to check:

Automatic Transmission Leak Points:

  • Drive shaft seal
  • Transmission pan seal
  • Input shaft seal
  • Valve body seal

Transmission leak fixChecking your transmission fluid level can also be confusing.  Unlike your engine oil your transmission fluid level needs to be checked while your vehicle is parked and running.  he dip stick will often have a red cap on it and be towards the rear of the engine near the firewall.  There will be 2 different level indications on the dip stick, one for when the fluid is cool, and one for when the fluid is warm.  Your automatic transmission fluid level should indicate in the “cold” range when you first start your vehicle and haven’t yet driven.  It should indicate inside the “hot” range after you’ve driven your vehicle relatively hard, for example, up a long hill, towing, or with the transmission in a lower gear to increase engine RPM.

Once you’ve identified your leak either by a low fluid level or visual inspection, the next question is: How much will this cost to fix?  If you let your transmission operate with a low fluid level, it will cause it to start shifting hard, but eventually will cause permanent damage and could cost thousands to replace.

350x200_TSLThe best way to prevent these high repair costs, and avoid having to add transmission fluid every few days to your vehicle is to use BlueDevil Transmission Sealer.  BlueDevil Transmission sealer is added directly to your automatic transmission with no need to do a fluid change.  Just add BlueDevil Transmission Sealer and it will work as you drive to seal your leak.  As you drive, Transmission Sealer will be absorbed into the worn out seals and gaskets in your transmission restoring them to their original size and sealing properties.

You can purchase BlueDevil Transmission Sealer from the manufacturer here: Transmission Sealer, or find it at your local parts stores like:

  • Bennett Auto Supply
  • Prime Automotive
  • O’Reilly Auto Parts
  • Pepboys
  • Car Quest Auto Parts
  • Advance Auto Parts
  • NAPA
  • Autozone

BlueDevil Transmission Sealer

Pictures provided by autorepair.about.com and www.peachparts.com

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227 responses to “How can I Stop My Transmission From Leaking Fluid?”

      1. I have a Ford F250 1999 pick up truck and the front main seal is leaking. Will this work to stop that leak ? How much shouldI use ?

        Reply

        1. Rebecca-

          Yes, BlueDevil Transmission Sealer will work to stop the leak coming from your front seal. Based on the capacity of your transmission we recommend adding 1/2 of the bottle (8 ounces) to your transmission. You can expect to see results after about 100 miles of driving.

          Thanks!

          -BDP

          Reply

      2. My 2003 Chevy Avalanche just stopped accelerating while driving, when I pulled the truck over I noticed all of the transmission fluid has leaked out. I purchased a brand new transmission in 2009 and I don’t think I should need a new one so soon. Do you think simply adding more fluid could fix the prob or are there any other cheaper alternatives other than purchasing a new transmission.?

        Reply

        1. Anthony-

          Thank you for asking about your Chevy Avalanche. Unfortunately, it does not sound like simply adding more fluid would correct the problem. We recommend using the BlueDevil Transmission Sealer, http://store.gobdp.com/transmission-sealer-00236/. You would fill the system with transmission fluid, leaving just enough room for the recommended amount of the product. You will be using one oz. of the product per quart of fluid in the system. You should expect to see results after about 100-200 miles of driving.

          Thank you!

          -BDP

          Reply

          1. Althea-

            The BlueDevil Transmission Sealer does not harden or thicken in anyway, so it would not have any adverse affects on the transmission. Feel free to contact our technical support line at 888-863-0426 with any other questions.

            Thank you!

            -BDP

        1. Angie-

          Thank you for asking about your Lexus. Are you noticing a loss of transmission fluid? 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

          Reply

        1. Penny-

          I assume you are referring to a transmission fluid leak. If that is the case then we recommend adding the proper amount of BlueDevil Transmission Sealer (http://store.gobdp.com/transmission-sealer-00236/). Based on the transmission capacity of your Ford Escape you should add 10 ounces of BlueDevil.

          One model of the 2005 Ford Escape is equipped with a CVT Transmission; if yours is equipped with the CVT then we do not recommend adding our product. CVT transmissions require a very specific type of fluid that can not be mixed with anything.

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

          Thank you!

          -BDP

          Reply

      1. Julio-

        We recommend using BlueDevil Oil Stop Leak. You should add 1 ounce of BlueDevil per every 1 quart of capacity. Expect to start seeing results after about 100 miles of driving.

        Thank you!

        -BDP

        Reply

        1. Hi, Do you put the transmission oil in when the car engine is hot or can you put it in when the car has not been driven?

          Reply

    3. My 64 Plymouth leaks around transmission pan, had no luck with new gaskets, used the right stuff gasket maker stopped leak a bit still have small leak will your product work, can it ham my 727 transmission thank you

      Reply

      1. Nick-

        Thank you for asking about your Plymouth. The BlueDevil Transmission Sealer is only intended for the rubbers in the system. The product does not harden or thicken in anyway, so it would not have any adverse affects on the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

        Thank you!

        -BDP

        Reply

      1. Brandyn-

        Yes, the BlueDevil Transmission Sealer is safe and compatible to use on your Dodge Ram 1500. You will be using one oz. of the product per quart of fluid in the system.

        Thank you!

        -BDP

        Reply

    6. When I drive my car and I stop at a stop sign and go to take off it like it doesn’t want to shift in gear and then after a couple days I have a great big huge puddle of transmission fluid do you know what that could be caused from

      Reply

  2. I have a 2002 Acura RL (front wheel drive). Differential has a small leak. Not leaking from the front cover so it has to be a seal leak. Having to top-off monthly. Do you have a product that could stop the leak?

    Reply

        1. Alex-

          Thank you for asking about your Audi A4. As long as you are not losing transmission fluid too quickly, you would be a great candidate for the BlueDevil Transmission Sealer. You will be using one oz. of the product per quart of fluid in the system.

          Thank you!

          -BDP

          Reply

  4. I have 1997 dodge ram 1500 2 wheel drive 5.9 letters. I started having issues with the transmission. I have noticed that every now and then the reverse gear will not kick in. If I drive it forward a bit, then reverse it, it will work. I went underneath the truck and noticed that the transmission pan is a wet. It has been leaking fluid. What do you recommend I do?

    Reply

    1. BlueDevil Transmission Sealer would be appropriate to stop your leak. The reason the transmission may be hesitating is because of the fluid being to low.

      When you add the product, be sure to use one ounce of BlueDevil per one quart of fluid capacity.

      Reply

        1. Dustin-

          Adding more than one oz of the Transmission Sealer per quart of fluid may make the leak worse if you are overfilling the system. It is not one of those things where more of the product would be better, so you really only want to add the recommended amount. Also, you should not overfill the system, as this could cause further issues.

          Thank you!

          -BDP

          Reply

  5. Hi, I have a 2001 infiniti i30 . n my input shaft seal is leaking. What would be the quickest and easiest way to fix my problem?

    Reply

    1. You would want to use the BlueDevil Oil Stop Leak to stop the leak from your input shaft seal. You will need to add about 1 ounce of BlueDevil per 1 quart of oil capacity.

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

      Reply

  6. I have a 1984 bmw 318i and my transmission leaks as soon as I pour it in…. I was wondering if the sealant really works or do I need a whole new tranny…

    Reply

    1. Based on your description it sounds like you may have a leak that is too large for this to work properly. If you have further questions, please call our tech line at 1.888.863.0426.

      Thanks,
      -BDP

      Reply

      1. Allan-

        Thank you for asking about your Ford Expedition. 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

        Reply

  8. I have a 2010 Geely CK. 1.5. The transmission is leaking oil and i don’t know where its coming from. Could you give me some advice please?

    Reply

    1. David,

      I’d recommend our BlueDevil Transmission Sealer. You can add 1oz per quart of fluid. If you have further questions, please call our tech line at 1.888.863.0426.

      Thanks,
      -BDP

      Reply

      2. Hi. I drive a 1998 Ford F150 Automatic. It has a very slow transmission leak(10-20 Drops within 24 hours). How can I fix the leak?

        Reply

        1. Jesse-

          We recommend using the proper amount of the BlueDevil Transmission Sealer. You should add 1 ounce of BlueDevil per 1 quart of transmission fluid capacity.

          Thank You!

          -BDP

          Reply

        1. Anthony-

          Thank you for asking about your Jeep Grand Cherokee. Based on your description, as long as you are not losing fluid too quickly, you would be a good candidate for the BlueDevil Transmission Sealer. You can expect to start seeing results after about 100-200 miles of driving.

          Thank you!

          -BDP

          Reply

  9. I have a 2007 Chevy Tahoe LTZ. I just came back from a 2 week vacation and when I opened the garage door I noticed a significant amount of transmission fluid on the garage floor. My neighborhood mechanic says it’s a leak at the front yoke and ujoint. Will this product work to stop the leak?

    Reply

    1. Based on your description it should work great for you! Use 1oz. of BlueDevil Transmission per quart of capacity. If you have further questions, please call 1.888.863.0426

      -BDP

      Reply

  10. I have a 1986 Ranger with automatic tranny that I believe has a seal leaking inside the tranny. RPMs increase between shifts from 2nd to 3rd like it may be having trouble holding enough pressure to shift. Once it shifts it pulls fine.

    Reply

    1. Gerald,

      You would be safe in using the recommended amount of BlueDevil Transmission Sealer. Keep in mind that it may take 100 miles or so before you see full results. If you have further questions, give our tech line a call at 1.888.863.0426.

      Reply

  11. I have a 91 ford f150 2wd with a 5 speed manual transmission I have a front inspection plate seal that is leaking a slow drip after driving then eventually it will stop will blue devil work for that the truck has 150000

    Reply

    1. Jesse,

      BlueDevil Transmission Sealer will work for any Rubber Gasket leak you may have… Please call our tech line at 1.888.863.0426 if you have further questions.

      -BDP

      Reply

  12. Hi, I definitely have a transmission leak, every day a quarter size red dot is on the driveway. I have a 2001 mazda tribute es, all wheel drive. Leak is on drivers side ,near the front of vehicle. Just ordered a bottle of your sealer, from blue devil. expect it in a few days. Anyway, I just top off my transmission fluid, to be safe. Can I still use the sealer or do I wait till the fluid is low? Thank you John 7-29-2014

    Reply

    1. Yes… but be sure you don’t overfill. Use 1oz. of Transmissions Sealer per 1qt. of Transmission Fluid.

      If you have any other questions don’t hesitate to call 1.888.863.0426!

      -BDP

      Reply

  13. I have a 2006 buick lacrosse cxs will this produck work to stop my leak dont know where it coming from yet but i dont think its a big leak

    Reply

  14. I have a Volvo v70 2000 with a transmission leak how many bottles of blue devil sealant would I need to seal my leak? And do I need to add transmission fluid with it?

    Reply

  15. Hi I’ve got a mercedes v220 auto, I’ve been told it’s the torque converter seal / gasket. Will your stuff be good for this? Cheers

    Reply

    1. Neil-

      Yes, you will need to use the BlueDevil Transmission Sealer. You should add 1 ounce of BlueDevil per 1 quart of fluid capacity. Please give us a call if you have any issues or questions. 1.888.863.0426

      -BDP

      Reply

  16. I have a 2001 Maxima and see drops of transmission fluid overnight. I haven’t been able to identify where the leak is. Should I use the stop leak anyway.

    Reply

  17. Had a mechanic look at my car they said my transmission oil pressure switch is the reason for my leak. Could I still use the transmission sealer? Because I don’t have the money right now to fix it.

    Reply

  18. I have a 00′ Ford Taurus, when I let my car run I have fluids in the body on the driver side up front and the middle. Is this a transmission leak?

    Reply

  19. leak coming from the front. Says it could be anything from seals to the differential or more. I can’t afford $650-700 to repair it. Would this sealant really work? And do I wait until the fluid is low before adding it?

    Reply

    1. Yes, the BlueDevil Transmission Sealer has a very high success rate and will work for the type of leak you have described. You should add 1 ounce of BlueDevil to every 1 quart of transmission fluid (for instance if your vehicle holds 5 quarts of trans fluid then you should add 5 ounces of BlueDevil.

      -BDP

      Reply

  20. I have a 85 D150 dodge truck. I have replace the transmission pan gasket and I still have a small leak on the gasket. Will blue devil fix the small drip?

    Reply

    1. Yes, the BlueDevil Transmission Sealer is specifically intended to stop leaks from any seals/gaskets within the Transmission including the pan gasket. You should add 1 ounce of BlueDevil to every 1 quart of transmission capacity.

      -BDP

      Reply

  21. My transmission fluid runtime out when it is put in the truck is a 1988 ford 150 it runs and is great on the highway will blue devil stop the out pour of transmission fluid

    Reply

    1. Charlie-

      If it is coming out as quickly as you pour it in then it may be too extreme for BlueDevil to work. If it isn’t a sever leak then the BlueDevil Transmission Sealer would be a great solution to stopping the leak.

      -BDP

      Reply

  22. I have a 2003 VW Passat and the transmission is leaking about a 3 inch diameter puddle after sitting over night from a 50 mile drive. I am told the TIPTRONIC TRANSMISSION is rather finicky and adding anything other than the recommended transmission fluid may not be recommended. Would you recommend BlueDevi Transmission Sealer with the information provided?

    Reply

    1. Willie-

      Yes, the BlueDevil Transmission Sealer is compatible with your Tiptronic Transmission. You should add 1 ounce of BlueDevil for every 1 quart of fluid capacity.

      Thanks,

      -BDP

      Reply

  23. Have a small leak. I am told.it is the rear main seal. Leaves about a dime size spot after driving. Which of your products would you recommend.

    Reply

  24. I have a 06 vw new beetle and it is leaking a good amount of transmission fluid when parked after driving. Can’t see where it’s coming from because of the metal plate covering the bottom. Any suggestions??

    Reply

    1. Ricky-

      You first may want to confirm that you are only losing transmission fluid. The BlueDevil Transmission Sealer will work to seal a transmission leak but if it is literally “pouring out” that may be a situation where the leak is too large for this to work properly.

      Please contact our tech support team at 888-863-0426 so that we may assist you.

      -BDP

      Reply

    1. Moh-

      If the transmission fluid is actually leaking from the hose or hose connection then the BlueDevil will not work. The BlueDevil Transmission Sealer is specifically formulated to stop leakage from the rubber seals/gaskets.

      -BDP

      Reply

  27. The dealer replaced the transmission on my 2nd vehicle, a 2006 Lincoln Mark LT a few months ago. Now it is sluggish when accelerating all over again and I have been told that it is leaking Diffrential fluid because it leaves transmission fluid on my driveway when I drive it. Is this a seperate issue or should it be covered under the warranty that came with the new transmission? Did they tighten or seal something improperly?

    Reply

    1. Charla-

      I would first confront the dealer that did the transmission work to see if they can cover the repair under warranty. If not, we recommend adding the proper amount of BlueDevil Oil Stop Leak to help stop the leak from your differential. You will not need the whole bottle, add 1 ounce of BlueDevil per 1 quart of fluid; most likely you will only need to add 2 – 3 ounces of BlueDevil.

      We hope this helps!

      -BDP

      Reply

  28. I was driving one day in my Nissan Altima & then i won’t not drive more for 15sec.I turned my car Off & then i started my car and it drove perfectly.I went to NAPA & they told me that I had no transmission fluid more ,they put transmission fluid for me.It have been 1week all & everyday in the morning i see a little leak of transmission leak (5 cm a 5 cm) .But during the day it doesn’t leak ,would this work?

    Reply

    1. Rosita-

      We recommend adding about 8 ounces of the BlueDevil Transmission Sealer to your transmission fluid. The should eliminate the leak and prevent you from having to add transmission fluid in the future. Keep in mind, it may take about 100 miles of driving before you see full results; if you do not drive a whole lot it can take a couple of days.

      Thank You!

      -BDP

      Reply

  29. I have a 1997 ford Taurus. I took it in to get a tune up because I was having trouble with my transmission. The mechanic told me that a had a front seal leak. I had to put in some fluid when I went on a 300 mile road trip but other than that haven’t had to put fluid in for the 6 months ive owned it. Can this product help?

    Reply

    1. Skyler-

      Yes, the BlueDevil Transmission Sealer is made specifically for stopping transmission fluid leaks. It sounds like you are catching the leak fairly early so you should have no problem stopping it with BlueDevil. You should be adding 1 ounce of BlueDevil per every 1 quart of transmission capacity.

      Thanks!

      -BDP

      Reply

  30. I hav a 91 grand marquise with a transmission leak i cant ho forward or backwards will blue devil work or do i need a new one please help

    Reply

    1. Carter-

      If the vehicle is unable to drive forward or backward then it is already to a point that is beyond what BlueDevil is intended to fix. We recommend taking the vehicle into a transmission specialist.

      Thank You!

      -BDP

      Reply

  31. I have a 2005 GM 3500 truck and the transmission fluid is leaking and I was wondering if the Blue Devil Stop Leak would help to stop the leak.
    If so, would one bottle be good enough to stop the leak. Also if I use the product would it affect the vehicle warranty?

    Thank you

    Reply

    1. Roger-

      Yes, the BlueDevil Transmission Sealer would be appropriate and safe to use in your GM truck. You may want to check with the dealership on whether or not using this product will affect your warranty status. However, if the vehicle is under warranty you may be able to have the seal replaced at no cost.

      If you do end up using the BlueDevil Transmission Sealer you should add about 10 ounces to your transmission fluid.

      Thank You!

      -BDP

      Reply

  32. i have a 1995 Cadillac seville STS, the front main seal has a leak. The leak is coming from the top of the transmission. The car has NOT been driven in 2 years because of this issue. But I changed the filter, pan, pan gasket and fluid the other day the car drove for 10 miles, and the leak was not as bad, the pan gasket went before the front main one, Would this product wor for a car with 487,548 Miles?

    Reply

  33. I have a 98 ford touras it been having transmission problems and it just started leaking what will help it last a little bit longer

    Reply

  34. I have a 2002 Chevrolet Impala and its leaking transmission fluid making it slip how can I fix this without it costing me an arm and a leg?

    Reply

  35. So the write-up describes your product being for automatics. Do you have another product for manual transmissions, or is this fine for manuals too? Mine is an old (’89) 5 speed, not exactly sure of leak(s) locations, but leak might be at rate of about 2 oz a week (?). sound potentially in the range of Blue Devil’s ability to remedy? thanks!

    Reply

    1. Gary-

      The BlueDevil Transmission Sealer is compatible with automatic and manual transmissions. Keep in mind, you need to add 1 ounce of BlueDevil per every 1 quart of transmission fluid capacity; many times a manual transmission has a smaller capacity.

      Thank You!

      -BDP

      Reply

  36. I have a 1998 Chrysler Sebring convertible and my transmission leaks and we tried tightening the hose but still leaks and are car will stall for a second sometimes because of the leak do you think your product would work

    Reply

    1. Amber-

      If the leak is only coming out around the hose then this will not work. If the leak is coming out around any of the seals or gaskets then then the BlueDevil Transmission Sealer is recommended.

      -BDP

      Reply

  37. I have 2005 Audi allroad (4*4). I found oil leak of my car. It is located underneath of front seats and center of car. Dealer said it’s somewhere from transmission seal. Blue Devil’s work ? And if I put Blue Devil in my car, how many ounce do i have to put?
    Thank You

    Reply

    1. Richard-

      Yes, we do recommend using the BlueDevil Transmission Sealer for your transmission fluid leak. The correct ratio of BlueDevil to use is 1 ounce per 1 quart of fluid capacity. You should notice results after about 100 miles of driving.

      Thank You!

      -BDP

      Reply

  38. Hi, I drive a 1998 Ford F150 Automatic, I have a very slow transmission leak(10-20 drops overnight). Could BlueDevil Transmission Sealer stop the leak? Also, if BlueDevil doesn’t stop the leak, will it cause any harm to my transmission? I have had my differential done with 4:88 ratio in the rear to assist when towing. Please get back to asap. Thanks.

    Reply

    1. Jesse-

      We recommend using the proper amount of the BlueDevil Transmission Sealer. You should add 1 ounce of BlueDevil per 1 quart of transmission fluid capacity.

      Thank You!

      -BDP

      Reply

    1. Kenny-

      Yes, the BlueDevil Transmission Sealer is compatible and safe to use in your C-6 Transmission with Type-F fluid. Be sure to add the proper amount of BlueDevil; you should add 1 ounce of BlueDevil to every 1 quart of capacity.

      Thank You!

      -BDP

      Reply

  40. I have a 1996 chevy s10 manual tranny and there is a leak near the back axle and I found out that it is my Transmission seal. How do I fix it?

    Reply

    1. Zach-

      We recommend adding the proper amount of the BlueDevil Transmission Sealer. Based on your transmission capacity (5.7 pints) we recommend adding about 3 ounces of the BlueDevil. Expect to notice results after about 100 miles of driving.

      Thank You!

      -BDP

      Reply

  41. I have a 03 chevy impala it is leaking transmission fluid from the dipstick will this product work or do i need a new dipstick

    Reply

  42. Have a 1996 Chevy Impala SS – all original with 4L60E transmission. Has 62000 miles on it. Has developed a small transmission fluid leak. It sits in garage most of time. After a month a small amount of fluid witting on plastic under transmission. I want to use your product but need to make sure it will not cause any damage. Also do you think it will work.

    Reply

    1. Dejaro-

      We do recommend using the proper amount of our BlueDevil Transmission Sealer. Based on your transmission fluid capacity (11.2 quarts) we recommend adding about 11 ounces of the BlueDevil; you do not need the full bottle. The product will not harm or damage your engine in any way.

      Once the product is added you can expect to see results after about 100 miles of driving.

      Thank You!

      -BDP

      Reply

  43. So I’m at a stop light and have to stop. So I stop. Then when the light runs green I try to go! The rpms go up, but I barely go anywhere. Then all of a sudden a jolt forward and go. Feels like it’s shifting weird. Then, I get home, have my bf check it out. My transmission fluid leaked all out. So we put more tranny fluid in. Went to put it in drive it wouldn’t move. Reverse, wouldn’t move.

    Waited a little. Put it in drive, it went forward a little. Put it in reverse and IT WENT FORWARD.

    I need help!!!!

    Reply

    1. Janella-

      We recommend that the vehicle is taken to a certified transmission specialist. Based on your description it is likely that the transmission will need to be rebuilt.

      Thank You!

      -BDP

      Reply

    1. Yes, the BlueDevil Transmission Sealer will work to seal a leaking front seal from the transmission. Be sure to use the proper amount, you should add 1 ounce of BlueDevil per every 1 quart of fluid capacity.

      Thank You!

      -BDP

      Reply

  46. I have a 1966 ford fairlane 390 engine (C-6 Transmission) that leaves spots from the transmission on the driveway. Will your sealer stop this???

    THANKS.

    BK

    Reply

  47. I have a ’93 Chevy Silverado, 305 engine and a 4L60E Transmission that keeps leaking form the speed sensor and end shaft. I put a new speed sensor in it and a new rear shaft seal, but still leaks…what you suggest ?

    Reply

    1. Dennis,

      Thanks for your question about your Silverado. We would recommend you use BlueDevil Transmission Sealer (available here: http://store.gobdp.com/transmission-sealer-00236/) to seal those leaks. BlueDevil Transmission Sealer will enlarge the shaft seal to seal that leak and your speed sensor is sealed by an o-ring, which should be sealed by BlueDevil Transmission Sealer as well.

      Thanks again for your question!
      -BD Auto Pro

      Reply

  48. would blue devil work on my tranny which uses nissan matic type j fluid only. i just ordered tranny sealer from blue devil and has it in my possession but i am afraid to put it in my tranny. would it damage the tranny?

    Reply

    1. Denver-

      Yes, the BlueDevil Transmission Sealer is compatible with the Nissan Type J Transmission Fluid. Keep in mind, you only need to add 1 ounce of BlueDevil per every 1 quart of fluid capacity; often times you will do not need the full bottle.

      Thank you!

      -BDP

      Reply

  49. I had my drivers side CV alxe try to replace it but it wouldn’t come out and now I leak out transmission fluid can I use this stuff

    Reply

    1. Clark-

      If the leak is coming out around one of the seals or gaskets then we do recommend using the BlueDevil Transmission Sealer. You should add 1 ounce of BlueDevil per every 1 quart of capacity. You can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

      Reply

  50. I have a 2003 Chevy Impala my transmission pan is leaking after I done change my screener and put a new gasket on it now it was still leaking. I took it off and clean it again and put the old gasket back on it because it was thicker and had wires in it now it has like seven 2sec drips would you recommend a Blue Devil to stop the drips

    Reply

  51. I have a 2001 Nissan Altima . I was told that I have a leak in my auto mic transmission( output shaft seal) which of the products do you recommend. Also I have a leak in one of the o rings of steering fluid. Which one would you recommend

    Reply

  52. Hi, I have a 1997 Mercedes Benz C230 and I just noticed it has been leaking transmission fluid at a very slow rate. What can I do to stop it and what can fix it? Thanks.

    Reply

    1. Amir-

      Based on your description, we would recommend using the BlueDevil Transmission Sealer. You will be using one oz of the product per quart of fluid in the system and should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

      Reply

  53. Embarrassing but my wife added the oil stop leak to the transmission fluid. Do I need to get the transmission fluid flushed now? 08 bone x5 4.0

    Reply

    1. Shaun-

      The BlueDevil Oil Stop Leak is actually a universal application, and can be used in the transmission system. As long as the system was not overfilled and you are not losing fluid too quickly, you should be alright and the product should be able to help seal your leak.

      Thank you!

      -BDP

      Reply

  54. I am not sure what the capacity is for a 2006 ford f150 with automatic trans but after driving last night— this morning I have a puddle underneath my truck and I was going to get some blue devil to put in with the additional fluid needed but I got confused on how much to add since I was not sure what the capacity is. can you tell me if I need to add more than one quart should I add say for instance 2 quarts of oil I would add (2 )1oz of the blue devil is this how it works? my truck is old but I need to keep it going as long as I can. thank you

    Reply

    1. Angela,

      Thanks for your question about your F150. You should add enough BlueDevil Transmission Sealer for the total amount of transmission fluid in your truck. Your transmission actually holds over 13 quarts of fluid so you can safely add a full bottle of BlueDevil Transmission Sealer. After you add BlueDevil Transmission Sealer, top off your transmission fluid with the proper type by checking the level on the dipstick. The transmission fluid dipstick is yellow and on the passenger side of your engine bay behind your oil cap. You should check the level with your truck running and in “park”.

      Thanks again for your question!
      -BD Auto Pro

      Reply

    1. Josh-

      Unfortunately, we do not manufacture any products for that type of leak. BlueDevil Transmission Sealer is designed to stop leaks coming from rubber seals/gaskets.

      Thank you!

      -BDP

      Reply

    1. Marla-

      Yes, BlueDevil Transmission Sealer is specifically designed to stop transmission fluid leaks. As long as it is not pouring through transmission fluid there is a very good chance BlueDevil can seal it. Please note that 1 ounce of BlueDevil treats 1 quart of transmission fluid so often times you will not need to add the full 16 ounce bottle (more is not better). Once the product is added you can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

      Reply

  57. Hi I have a 2001 vw Passat. And my mechanic told me it the torque converter seal it leaking a little bit would this product stop the leak?

    Reply

    1. Angelo-

      Yes, BlueDevil Transmission Sealer will work to seal any leaks coming from the torque converter seal. The correct amount to use is 1 ounce of BlueDevil per every 1 quart of fluid capacity. You can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

      Reply

  58. I have a 90 bronco II 2wd 2.9 liter automatic. How much bluedevil tranny seal should i use? What if i use too much bluedevil transmission seal?

    Reply

    1. Hunna5-

      Based on the transmission capacity on your Bronco II we recommend adding 9 ounces of BlueDevil Transmission Sealer. You can expect to start seeing results after about 100 miles of driving.

      Thank you!

      -BDP

      Reply

    1. Jeffrey-

      No, the product will not have any negative effect on any of your seals or gaskets. BlueDevil is only slightly expanding the seals and rejuvenating them to bring them back to the original size and condition.

      Thank you!

      -BDP

      Reply

  60. Hello, I have a 2000 Chevy Tahoe and have been noticing transmission oil on the ground. And driving out yesterday I heard a crackle sound like I rolled over a water bottle. But I didn’t though, I noticed my truck wasn’t speeding up as fast like when I was pushing on the gas paddle. After returning home right away, I tried to head back out and noticed the truck will not go in reverse but will go forward…..HELP does this mean my transmission is gone? I really hope not!!!! Can I use our product and it will fix the problem…..

    Reply

    1. Tomika-

      Thank you for asking about your Chevy Tahoe. Based on your description, we would recommend using the BlueDevil Transmission Sealer for your leak. You may want to change the transmission fluid in the system first, as any build up or foreign substances in the system could cause transmission issues. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

      Reply

    1. Jesus-

      Unfortunately, we do not recommend using BlueDevil in a CVT transmission. Continuously Variable Transmissions are very specific as to the type of fluid that is compatible.

      Thank you!

      -BDP

      Reply

      1. You say “do not recommend” … Is that because is hasn’t been tested in a CVT or do you know for fact that it is harmful?

        Reply

        1. Rich-

          CVT Transmission require very specific transmission fluid that should not be mixed with anything else. We definitely do not recommend the use of BlueDevil Transmission Sealer in a CVT Transmission.

          Thank you!

          -BDP

          Reply

  62. I have 2006 autonatic kia picanto. I saw leak in my garage don’t know if engine oil or transmission oil. I had just change oil lately. Is blue devil oil will stop the leak? Thank you.

    Reply

    1. Shirley-

      Thank you for asking about your Kia Picanto. Based on your description, the BlueDevil Oil Stop Leak is the product you would want to use. The Oil Stop Leak is a universal application, so that would treat a leaking oil pan gasket, valve cover seal, rear main seal, transmission, power steering, etc. You may want to check your oil and transmission fluid levels prior, as that would be a pretty good indication as to where the leak was coming from.

      Hope this helps!

      -BDP

      Reply

  63. My 2002 jeep grand cherokee leaks red near the front/middle, slightly towards passenger side maybe. I add fluid all the time. It smells bad sometimes and smokes out the front. The other day It started shaking and wouldn’t go good when I got to about 50. Shaking bad. It only did this twice? I’m a no-nothing and can’t afford things. Will BlueDevil help this problem?

    Reply

    1. Maryanne-

      Thank you for asking about your Jeep Grand Cherokee. As long as you are not losing transmission fluid too quickly, you would be a good candidate for the BlueDevil Transmission Sealer. You should make sure the system is filled, leaving just enough room for the recommended amount of the product. You will be using one oz of the product per quart of fluid in the system. Feel free to contact our technical support line at 888=863-0426 with any other questions.

      Thank you!

      -BDP

      Reply

  64. Is this safe for a Mercedes 722.607 transmission? if so the fluid level parameters are very specific and experts state that even a few ounces of transmission fluid over the limit for these transmissions can be damaging….somewhere around 6 or seven ounces of your product is required. Can your product substitute for 136 transmission fluid to bring it up to a desired level on the dip stick without damaging these transmissions?

    Reply

    1. Tony-

      Yes, the BlueDevil Transmission Sealer is compatible in your Mercedes. You are correct in the fact that it is very important for you to not overfill the transmission. The product is not a substitute for your transmission fluid, so if your transmission fluid is already at capacity, you would want to drain enough fluid out in order to add the 6-7 ounces of the product needed for your vehicle. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      Reply

  65. The front differential on my 1999 Chevy Silverado 4×4 is leaking. Do you have a product that can fix this problem?
    Thanks!

    Reply

      1. Perfect! Since the 4wd isn’t engaged often, will that be a problem? Will it be necessary to run the truck in 4wd for the product to be effective? Thanks!

        Reply

        1. Mark-

          The truck would not need to be run in 4wd for the product to be effective. Typically, you should expect results after about 100-200 miles of driving.

          Thank you!

          -BDP

          Reply

  66. Hello,
    I have a 2007 Chevy Tahoe flex fuel and when changing my oil they said I had a transmission leak. After a couple days sitting on my drive way I noticed a small spill from the leak they mentioned. I was curious if this is good to use to try and fix my leak and if so how much should I use to try and fix it. Thanks

    Reply

    1. Eddy-

      The transmission fluid capacity in your 2007 Tahoe is 11.2 quarts. We recommend adding 11 ounces of BlueDevil Transmission Sealer to properly treat your transmission. You can expect to start seeing results after about 100 miles of driving. Overall, the product carries a success rate that is approximately 90%.

      Thank you!

      -BDP

      Reply

  67. Hello,

    I have a 2004 Honda Accord EX 2.4L. I have a small trans leak, but the fluid is also in need of changing. Can I change the fluid than add this product, or would you recommend I add this product to the dirty fluid and change the fluid after the leak stops?

    Reply

    1. Steve-

      Thank you for asking about your Honda Accord. Based on your description, we would recommend changing your transmission fluid before adding the product. Once added, you can expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

      Reply

  68. I’ve a Nissan Sentra 2007 and it is leaking transmission fluid and I’m unable to figure out from which part is it leaking from but the bottom pan is wet and a 3-4 cm puddle is being formed overnight. Would you recommend a sealer. If so, can you let me know how is it used and how much do I need to use ?

    Thank you

    Reply

  69. I have a 2000 Chevy Blazer and woke up with a large amount of transmission fluid on the driveway. Can BlueDevil transmission sealer seal the leak?

    Reply

    1. Smitty-

      Thank you for asking about your Chevy Blazer. The BlueDevil Transmission Sealer is intended for leaks that are seeping or lightly dripping from the system. Based on your description, you may be losing fluid a little too quickly for the product to be effective. A hard part repair may be your best option.

      Hope this helps!

      -BDP

      Reply

  70. Please help! I was told to add the whole bottle to my transmission. Having trust in the person, i did. What do i do?!

    Reply

    1. Jared-

      First off, it will not harm the system. If it appears the transmission fluid level is above the “full” mark then you will want to siphon some out as the transmission may act up if it is too full.

      Feel free to contact us at 888-863-0426 to discuss the product and your vehicle.

      Thank you!

      -BDP

      Reply

  71. Will this product work on a 2007 Nissan Sentra front wheel drive with a CVT transmission seal leak? I’ve been hearing a lot of mixed responses for CVT transmissions

    Reply

    1. Daniel-

      Thank you for asking about your Nissan Sentra. Unfortunately, we do not recommend using BlueDevil in CVT Transmissions. The fluid used is very specific.

      Thank you!

      -BDP

      Reply

  72. hi my car is landrover freelander 1 i’ve notice dots of transmission oil on my garage but i dont know where that come from can this product fix the leak

    Reply

    1. Benson-

      Thank you for your question about your Land Rover! We recommend adding 1 ounce of BlueDevil Transmission Sealer per every 1 quart of fluid capacity. This will help stop the transmission fluid leak you are experiencing. Expect to start seeing results after approximately 100 miles of driving.

      Thank you!

      -BDP

      Reply

  73. Hi, I have a 1996 Mercedez E320, I noticed transmission oil leak at the front of the car but I don’t know where is the leak coming from. Mechanics wasn’t able to fix the problem. Help!

    Reply

  74. I have a 2000 Chrysler Concorde LXi with the 3.2 Litre engine. I have 77,000 km on the motor. I have developed a transmission leak where the upper transmission hose goes into the radiator. It was very hard to get at to tighten the hose clamp and I left it up to a mechanic. My question is: Would your stop leak product have been any good to help seal these lines.
    Thanks in advance.

    Reply

    1. Jim-

      Thank you for asking about your Chrysler Concorde. The BlueDevil Transmission Sealer is only intended for the rubber seals/gaskets in the system. Based on your description, it seems the only choice you had was to let the mechanic do the work.

      Thank you!

      -BDP

      Reply

  75. I have a 1995 GMC Sierra with a 4l60E. I replaced the yolk seal on the tranny, but it continues to leak. Will your product save me from getting another seal and using gasket maker to make sure it stops completely?

    Reply

  76. I have a 2004 Honda CRV – started having some issues when the car was trying to shift. I noticed the transmission fluid was very low. Added more fluid and car ran great for about a week. Now i am having the same issues and the fluid is low again so I am assuming a leak. Will this product help?

    Reply

  77. I have a 1979 f100 Ford it’s a lonely makes sound as if the e brake when I try to go it is leaking transmission fluid is it my trans or my brakes

    Reply

    1. Melissa-

      Thank you for asking about your Ford F100. Based on your description, we recommend using the BlueDevil Transmission Sealer http://store.gobdp.com/transmission-sealer-00236/. The product will revitalize and recondition the rubber seals and expand, or swell them up back to their original state. You will be using one oz. of the product per quart of fluid in the system and should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

      Reply

    1. Javier-

      Thank you for asking about your Nissan Altima. Unfortunately, we do not recommend using BlueDevil in a CVT transmission. CVT transmissions use a very specific type of transmission fluid that can not be contaminated with any other type of fluid.

      Thank you!

      -BDP

      Reply

    1. Ashley-

      How quickly are you losing fluid? 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

      Reply

  80. My 98 Camry 2.2 auto tranny is leaking red fuild. Is this coming from transmission? It is leaking very slow. It left about quarter coin sized spot on my drive way for past 12 hours. Do you think when should I start using the buledevil? Should I still use 3-4 oz (3.7 quart for my car) since I only lose a little bit of ATF? Thanks in advance.

    Reply

    1. April-

      Thank you for asking about your Saturn. The BlueDevil Transmission Sealer is intended for leaks that are seeping or lightly dripping from the system. Typically, you should expect to see results after about 100-200 miles of driving. If you are losing transmission fluid to the extent that you would lose your capacity before you got to 200 miles or so of driving, you would more than likely lose the product in that time, and would not be able to keep it in the system long enough in order to get the benefit of using it.

      Thank you!

      -BDP

      Reply

  82. I have a question. I have a 2004 dodge neon and the transmission is leaking we just bought the blue devil but my question is how much should we put in? And do we also add the transmission fluid in it too? If so, do we add it before the blue devil or after we pour it in? And how long will it take for it to start working?

    Reply

    1. Sabrina-

      Thank you for asking about your Dodge Neon. You will be using one oz. of the product per quart of fluid in the system. If the system is low, you may add the recommended amount of the product and then top it off with your transmission fluid, being careful not to overfill the system. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

      Reply

  83. Linda I just bought transmission seal I want to know when I receive it how do I use it I have no idea how this product work will like to learn more about it before I start putting it inside my transmission do I empty out the transmission fluid how does this really work

    Reply

    1. Linda-

      The BlueDevil Transmission Sealer http://store.gobdp.com/transmission-sealer-00236/ works by revitalizing and reconditioning the rubber seals/gaskets in the system, and will slightly expand them back to their original state. You will be using one oz. of the product per quart of fluid in the system. You should be close to capacity with your transmission fluid, leaving just enough room for the recommended amount of the product. Typically, you should expect to see results after about 100-200 miles of driving. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      Reply

  84. If I have a 04 chevy silverado and my trans leaked all the fluid out ( it won’t show up on stick when truck is running) can I put more trans fluid in and sealer? Will this fix my problem?

    Reply

    1. Justin-

      Thank you for asking about your Chevy Silverado. Unfotunately, it seems that you are losing transmission fluid too quickly for what the product is intended for, thus, you wouldn’t be able to keep the product in the system long enough in order to get the benefit of using it. A hard part repair may be your best option.

      Thank you!

      -BDP

      Reply

  85. I have a 2013 kia optima hybrid it is leaking from the transmission oil pan because my son ran over a rock nothing seems cracked its just drips a little. My question is if I put a sealant would it mess up the transmission.

    Reply

    1. Tina-

      BlueDevil Transmission Sealer works by reconditioning the rubber seals/gaskets throughout the transmission; it does not harden or thicken to stop leaks. The product is not designed to stop a leak coming from a physical crack in the transmission. We do not manufacture any products that would be able to seal that type of leak.

      Thank you!

      -BDP

      Reply

  87. I just changed my transmission kit for a grand prix pontaic 06 and when i parked my car the transmission fluid was still leaking. he even put some liquid transmission gasket paste or whatever its called for the gasket to stop it from leaking. but it still leaking what can i do for it?

    Reply

    1. Eve-

      Thank you for asking about your Pontiac Grand Prix. Unfortunately, we would not recommend adding the BlueDevil Transmission Sealer to the system as it currently is. Being that another product was previously used, we recommend having the transmission system flushed, prior to adding the BlueDevil Transmission Sealer. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      Reply

  88. I have a 2004 Pontiac Grand Prix supercharged with a slow drip, will this product just hold my transmission over for a while, permanently fix it, or make the transmission dependent on the product until the leak is properly fixed

    Reply

    1. Mark-

      Thank you for asking about your Pontiac Grand Prix. Once the product seals, it would be a permanent seal. It is not considered temporary by any means, and the system would not be dependent on the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      Reply

  89. I have a 1999 lexus es300, it has a vary small leak (only 3 drop after driving) from the gasket in the middle and the mechanic say you have a leak from the rear seal and you need to have to rebuild your trans by changing all seal and gasket. could this be a easy fix by using your product and is it safe to use on my lexus. thank you

    Reply

  90. I have a 2002 Honda Accord EX 4 cylinders. The transmission fluid travels at the bottom of the pan gasket. could it be that the hose could be the problem and the fluid travels down it when im parked.

    Reply

    1. Brandon-

      Thank you for asking about your Honda Accord. It is a little difficult to say what the issue is based on your description. 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

      Reply

  92. I discovered a large puddle under my car today of red transmission fluid. It is a 1999 Ford Taurus, would your product work for this type of leak?

    Reply

    1. Kaz-

      Thank you for asking about your Ford Taurus. How quickly are you losing transmission fluid? The BlueDevil Transmission Sealer is intended for leaks that are seeping or lightly dripping. 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

      Reply

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