Trans Fix (1415)

Trans Fix


  12 Reviews

The days of needing a specialized transmission stop leak formula are over. With modern chemical technology advancements, it’s now possible to have a transmission treatment that handles any type of transmission. This type of product is not easy to engineer. It requires years of experience, and a ridiculous amount of lab time. It requires a deep understanding of transmission technology, common problems, and what root causes lie behind these problems. We did the research. We put the time in. The result is Bar’s Leaks Trans Fix, the only transmission treatment that handles just about any type of transmission If you have a transmission that’s suffering from leaks, slipping, jerking, hard shifting, shudder or just plain poor shift feel, Bar’s Leaks  Trans Fix is the only bottle you need to optimize transmission performance.


Shake well. One bottle treats 7 to 11 quarts of fluid. Use 1/2 bottle for 3 to 6.9 quart capacity. Add Trans Fix to transmission, do not overfill. Consult owner’s manual if needed for transmission dipstick / fill plug location. Do not overfill. Drive vehicle normally. Depending on the transmission problem, results will be immediate or noticeable within 250 miles or 3 days of driving. In transmissions with seriously damaged components, a second treatment may be required. In this case, it is suggested that the fluid and filter be changed before adding a second bottle.

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Bar’s Leaks Trans Fix is an advanced, synthetic-blend treatment for transmission fluid, seals, metal surfaces, bands and clutch plates. Global domestic/import formulation can be used in all automatics, manuals, CVTs (Continuously Variable Transmissions) and DCTs (Dual Clutch Transmissions).

Bar’s Leaks Trans Fix is an advanced formula that includes:

  • Seal conditioners stop current leaks and prevent future instances by protecting and reconditioning seals
  • Extreme pressure/anti-wear agents provide better metal-to-metal friction properties to stop slipping, jerking, hard shifting, shutter/shudder, which improves shift feel and provides better driving comfort
  • Advanced cleaning detergents include dispersants and antioxidants to remove sludge and varnish from metal parts
  • Performance additive booster renews worn bands, controls fluid degradation caused by high temperatures, reduces noise, and prolongs the useful life of your transmission

These additive packages stop slipping, rough shifting, seal fluid leaks and reduce noise. Bar’s Leaks Trans Fix renews worn fluid and restores older and high-mileage transmission performance. Very effective and safe to use on regular automatic (step, overdrive transmission, 2WD, 4WD, AWD), CVT (Continually Variable Transmission), DCT (Dual Clutch Transmission), ECT (Electronically Controlled Transmission), manual (stick shift), transaxle (front wheel drive/all-wheel drive).

Trans Fix helps with small leaks (for example, if you need to add fluid 1x per month), medium leaks (if you need to add fluid 1x per week), slipping/hesitation, rough/hard shifting, noise/whining, transmission warning lights and other fluid-related problems.

All our renowned maintenance and repair solutions are the result of over 70 years of automotive chemical research. Since our beginnings in 1947, we’ve been known for maintaining the performance of consumer, commercial, OEM and even military applications. When you choose Bar’s Leaks, you can depend on proven performance at a reasonable price, backed by a family-owned company that knows aftermarket chemical automotive solutions better than anyone else in the world.


Our technology and research changes as the automotive industry evolves. We have become synonymous in the automotive world with maintenance and leak repair, from consumer to professional situations, for any budget, any level of installation expertise.

Engineered and 100% made in the U.S.A., just an hour northwest of Detroit, Bar’s Leaks formulas are manufactured by a family-owned team whose mission it is to make leaks and preventable automotive problems a thing of the past. With hundreds of millions of bottles sold in our company’s history, you’re in the right place.

Discover where to get Bar’s Leaks Trans Fix at a retailer near you.

Customer Reviews

  12 Reviews
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 12 reviews
 by Matthew D.
All it took was one bottle

Amazing product! Stopped my transmission chatter with one bottle!

Thanks for the feedback, Matthew!

 by Andrew J.
Thought my car was going to be a lawn ornament

I can't believe how good this product worked. I'm just beside myself. Very impressive. Thank you. Saved my car. I owe 8 grand on it. I was thinking it was going to be a lawn ornament.

 by Brian
Trans Fix

03 Buick started hard shifting during bumper to bumper traffic. I had the same problem in another Buick, ended up needing a transmission. After I got through the traffic I went to Walmart put in the Trans Fix and continued my trip. Shifting was better by the next construction area.
Finished my trip and made it home with no problems.
Thank You!

 by Justin Veney

Great product. Comes with built in nozzle, no need for funnel.

 by Nav

It is best product to use it and very easy to use it.

 by Nav

It is great product. Easy to use it.

 by Jassmin
Good product

Good product

 by Mario sinclair
I real love this product

This is a wonder drug for cars. My car runs better then when I first bought it. Thank you so much for this.

 by Michael
Review of Trans Fix

Easy to use product. Noticed smoother shifter after first day. Great for the price.

 by Stevie
Easy and cost-efficient

This product was very easy to use and nice for a vehicle was issues but you can’t afford to replace it.

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