How can I Stop My Transmission From Leaking Fluid?

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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147 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 ?

        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

      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

        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?

  1. 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?

  2. 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?

    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.

        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

  3. 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?

    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.

  4. 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…

    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

  5. 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?

    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

      1. 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?

        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

  6. 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?

    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

  7. 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.

    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.

  8. 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

    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

  9. 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

    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

  10. 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

  11. 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?

  12. 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

    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

  13. 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.

  14. 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.

  15. 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?

  16. 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?

    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

  17. 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?

    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

  18. 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

    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

  19. 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?

    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

  20. 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.

  21. 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??

    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

    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

  22. 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?

    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

  23. 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?

    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

  24. 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?

    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

  25. 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

    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

  26. 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

    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

  27. 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?

  28. 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

  29. 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?

  30. 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!

    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

  31. 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

    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

  32. 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

    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

  33. 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.

    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

    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

  34. 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?

    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

  35. 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

  36. 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.

    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

  37. 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!!!!

    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

    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

  38. 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

  39. 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 ?

    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

  40. 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?

    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

  41. 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

    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

  42. 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

  43. 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

  44. 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.

    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

  45. 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

    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

  46. 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

    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

    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

    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

  47. 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?

    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

  48. 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?

    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

    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

  49. 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…..

    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

    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

  50. 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.

    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

  51. 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?

    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

  52. 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?

    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

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

      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!

        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

  54. 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

    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

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