Trans Fix
Trans Fix
The days of needing a specialized transmission stop leak product 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 tremendous 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.
- Safe for ALL Transmissions
- Works in Automatic, Manual, CVT & DCTs
- Stops Slipping, Hesitation & Fluid Leaks
- Synthetic Blend Technology
WHATEVER TRANSMISSION YOU HAVE, WE’VE GOT YOUR BACK.
Product Details
Product Number: 1415
Dosage: One bottle treats transmission systems from 7 to 11 quarts of total fluid capacity.
Size: 11.5 FL OZ
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.
WHATEVER TRANSMISSION YOU HAVE, WE’VE GOT YOUR BACK.
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. 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.
DIRECTIONS
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.
Frequently Asked Questions
Technical Info
Current Deals

1415 $5.00 Rebate
Receive a $5.00 rebate with the purchase of Trans Fix. Offer ends December 31st, 2025.
Click here to submit your receiptWhere to Purchase
Customer Reviews
Matthew D.
Product Reviewed: Trans Fix (1415)

All it took was one bottle
Amazing product! Stopped my transmission chatter with one bottle!
Andrew J.
Product Reviewed: Trans Fix (1415)

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.
Brian
Product Reviewed: Trans Fix (1415)

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!
Justin V.
Product Reviewed: Trans Fix (1415)

Review
Great product. Comes with built in nozzle, no need for funnel.
Nav
Product Reviewed: Trans Fix (1415)

It is best product to use it and very easy to use it.
Nav
Product Reviewed: Trans Fix (1415)

It is great product. Easy to use it.
Jassmin
Product Reviewed: Trans Fix (1415)

Good product
Good product
Mario s.
Product Reviewed: Trans Fix (1415)

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.
Michael
Product Reviewed: Trans Fix (1415)

Review of Trans Fix
Easy to use product. Noticed smoother shifter after first day. Great for the price.
Stevie
Product Reviewed: Trans Fix (1415)

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.
Terri
Product Reviewed: Trans Fix (1415)

Trans fix
The product is easy to use. I felt less slipping and smoother shifting, after using the product.
Amanda
Product Reviewed: Trans Fix (1415)

Review
I like most that it really did help the slipping in my transmission. It completely did what it said it was going to do.
