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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code FOUND25 at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 2/27/17. Online orders scheduled for in-store pick up must be completed by closing on 2/26/17 for discount to apply.

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  • Part #: 10009|
  • SKU: 9103328

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    • Cleans and lubricates sticking valves for proper shifting
    • Extends fluid life up to three times longer
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Lucas Oil Transmission Fix

Lucas Transmission Fix is a thermal stable blend of petroleum-extracted additives designed to correct existing problems and prevent new ones in automatic transmissions.
  • Cleans and lubricates sticking valves for proper shifting
  • Extends fluid life up to three times longer
  • Stops most seal leaks and controls heat and foaming
  • A must for motorhomes, towing vehicles and all other hard working transmissions
  • Contains no harmful solvents
  • Use in light duty manual transmissions that call for ATF



Rated 4.8 out of 5 by 40 reviewers.
Rated 5 out of 5 by Quality Fix Lucas Oil Transmission Fix does whats suppose to do. For my older vehicle, it slows down the leaks and keeps my transmission running well. September 26, 2016
Rated 5 out of 5 by Excellent If your transmission is slipping this product will do the trick. My trans mission was so bad I couldn't even go over a bridge overpass. Now, I sail over and can stop on the incline and have no problem when I press the accelerator. August 28, 2016
Rated 4 out of 5 by lucas oil products are some of the industries best the lucas treatment works well for my application August 25, 2016
Rated 5 out of 5 by Best Stuff Yet This stuff saved me a $4000 transmission job. August 20, 2016
Rated 5 out of 5 by Wondefull No more problem August 16, 2016
Rated 5 out of 5 by great product I always use it to strength my transmission fluids as a supplement i cannot live without it. August 9, 2016
Rated 5 out of 5 by Saved our vacation! 1995 Ford 250 automatic pulling 25 ft 5th wheel. major "bucking" & abrupt shifting up/down gears returning from Texas to california drove most off the day like that sure we were headed to a breakdown-stopped in phoenix az, major pool of transmission fluid on ground. Used Lucas- no more bucking- drove like brand new. Took 5th wheel out 4mos later-started again put more Lucas-stopped! Need to replace seals, but until then this works! March 24, 2016
Rated 4 out of 5 by product does what it says it does Read about this online and tried it. Have a lot of miles on my car and this definitely made my transmission shift easier. Have half a container left and will use it when I flush out the system again this spring November 8, 2015
Rated 5 out of 5 by This has solved every issue I have used it for From high mileage slipping, to leaking, to hard shifting. This Lucas Oil Transmission Fix has proven its worth time after time. November 4, 2015
Rated 4 out of 5 by great it's work!!! October 22, 2015
Rated 5 out of 5 by Works!!! Work great on my 1964 El Camino. I was finding a lot of trans fluid on the floor of my garage every day before I put this in. After I used it...a drop or two once in a while! It was so cheap and easy! I would definitely use this again. And with a two bottle satisfaction guarantee from Lucas, you can't go wrong. What have you got to lose? Get works. October 15, 2015
Rated 5 out of 5 by lucas oil transmission fix did a greaat job trans was a little slugish and this item worked great September 5, 2015
Rated 5 out of 5 by works as advertised Lucas is a trustworthy brand August 20, 2015
Rated 5 out of 5 by very good and high in quality very good high as to protect the car August 4, 2015
Rated 5 out of 5 by Lucas trans fix Very good product. Use it to prolong the life of your transmission, and to fix any small things like slipping or hard shifting, matter of fact anything. But i will say leaks it may slow it down, but go to a trans shop if there leaking thats major. But i use it in all my cars, and im not a slow driver, I put my foot to the floor, so burning the trans oil i know im doing,but the trans fix keeps working. If you are having small trans issuse try one bottle and give it maybe 15mins and you should feel the difference. August 4, 2015
Rated 3 out of 5 by Didn't work It didn't work, but I don't blame Lucas. My tranny was just gone (240,000mi.), nothing would have fixed it, I just had to give it a shot. July 14, 2015
Rated 5 out of 5 by Magic in a bottle Excellent product. Had trans. slipping and hard shifting in my 1999 Tahoe. Changed the trans filter, new trans fluid and 2 bottles of transfix. Just like magic. No more trans slip or hard shifting. Saved me $2500 for a rebuilt trans. My mechanic was amazed. Said he has never had or heard of such a dramatic difference in a transmission by adding a after market product. Figured I would give it a try. For the cost of a couple bottles of Lucas, a trans filter and some trans fluid I could't go wrong.The reviews are all true. That being said. This product worked for me. It may or may not work for you. Depends on what problem your transmission is having. June 24, 2015
Rated 5 out of 5 by Helped shifts Helped shifting on an old pickup. Didn't fix everything, but that is expected. It did help. May 17, 2015
Rated 5 out of 5 by It is a Transmission Fix!!! I have a 96 Mitsubishi Mirage with 130k miles and had never change the transmission fluid. The transmission was shifting very erratic. I ask my mechanic if I should change the trans fluid and he advice me not to change it. But after 2 moths it was getting worse so a decided to change it. The fluid look like very bad, like motor oil. I drain the transmission and fill it with 1 lucas transmission fix, 1 castrol transmax high mileage, and the rest was fill with castrol transmax import multi-vehicle. What a difference, the transmission shifted smoothly. Once it had 1,000 miles on it I decided to drop the transmission pan and change the trans filter and added the same cocktail. Now it have 136k miles and is running like new. Great stuff!!! ps. Patience this stuff is really thick…I heated the bottle on a bucket with hot water before dropping it in the trany. May 10, 2015
Rated 5 out of 5 by TRANS ADDITIVE AWESOME PRODUCT AT A GREAT PRICE February 17, 2015
Rated 5 out of 5 by Lucas fixed it I worked on a 2003 VW Jetta 1.8L Turbo. The transmission would not move at all. After I fill it up with a bottle of Lucas stop slip, I was able to get the car to work again for a good amount of time. January 24, 2015
Rated 5 out of 5 by Worked to extend the life of the failing transmission. THis product extended the life of the failing transmission. December 24, 2014
Rated 5 out of 5 by Worked Great... Had some transmission noises at low speed, after about two weeks noise was gone. Great stuff. December 6, 2014
Rated 4 out of 5 by Worked just like advertised My 2006 Trailblazer has over 160,000 miles on the transmission. I noticed a bit of slippage at highway speed. Added Lucas oil treatment as recommended by Pep Boys Salesman. I noticed an instant improvement in the driveability of the truck. November 20, 2014
Rated 3 out of 5 by Lucas oil transmission fix Probably a good product, but I have a leaky seal on the transmission and it did not stop the leak. November 19, 2014
Rated 5 out of 5 by It works! other then the price, it worked. Leak was not a drip, it was Big Drops. Cheaper at the big box store I saw, But, can't complain, few bucks xtra at the time saved, maybe a few thousand or more. It Works!! That was a few months ago, so fingers crossed. It's worth a shot, may take a few applications or several days. November 5, 2014
Rated 5 out of 5 by Great Product!! My Transmission Valve Body was bad. I added Lucas when i changed the Valve Body. I expect it to last a long time, and Lucas cuts down on the wear. Give it a try when you service your Transmission. :) October 21, 2014
Rated 5 out of 5 by Made improvements I used this in my sons car. We could tell the transmission fluid had never been changed on the car which was 14 years old at the time of this review. We had changed as much of the fluid in the trans as we could earlier this year,. We pumped 3 of those 5qt containers through his trans. After 2 it was coming out clean, but just for good measure we put 1 more through. After all that it was still shifting hard, especially reverse. I heard about this stuff and decided to try it. We emptied 24oz of trans fluid, and put the entire contents of this bottle back into the transmission(24oz). It made a noticeable improvement right away with the shifting, and reverse doesn't slam into gear as badly as it was previously. After about a week, I took his car for a drive and was amazed how much better it was shifting through the gears. This stuff is worth every penny IMO. October 1, 2014
Rated 5 out of 5 by Lucas Oil Trans Fix I have used Lucas Oil Trans Fix in 2 vehicles with good results in both. Have told friends to try as well, also good results. Lucas products work. September 18, 2014
Rated 4 out of 5 by Improved shifting I have a 2006 Honda CRV - 140K miles. Transmission was just beginning rough shifting especially in lower gears. Lucas Oil Transmission Fix smoothed it out. Shifting is tighter now. Would recommend this at the first sign of trouble. August 22, 2014
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