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 at http://bit.ly/16JIVMM or find it at your local parts
stores

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

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

35 Responses to “How can I Stop My Transmission From Leaking Fluid?”

  1. Rick on

    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
  2. Ben on

    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
    • BlueDevil Pro on

      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
  3. Jamaal C. on

    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
    • BlueDevil Pro on

      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
  4. D on

    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
    • BlueDevil Pro on

      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
  5. Dawid on

    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
    • BlueDevil Pro on

      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
  6. Eric on

    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
    • BlueDevil Pro on

      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
  7. Gerald on

    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
    • BlueDevil Pro on

      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
  8. jesse on

    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
  9. john will on

    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
    • BlueDevil Pro on

      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
  10. Richard Harrison on

    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
  11. Tia Martin on

    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
  12. Neil on

    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
    • BlueDevil Pro on

      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
  13. Tyrone McGarrell on

    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
  14. Cierra on

    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

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