



⚙️ Keep your gears tight and your ride smooth — don’t let leaks or noise slow you down!
Bardahl 3119 Gear Oil Additive + StopLeak is an 8 oz universal formula designed to extend gear oil life, condition seals to stop leaks, reduce gear wear and noise, and improve manual transmission shifting. Its Polar Attraction Formula creates a protective film that enhances gear performance and longevity, making it an essential maintenance additive for cars and trucks.


| ASIN | B002QET15S |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #784,821 in Automotive ( See Top 100 in Automotive ) #376 in Gear Oils |
| Brand | Bardahl |
| Brand Name | Bardahl |
| Compatible with Vehicle Type | Car, Truck |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 115 Reviews |
| Global Trade Identification Number | 00076906031196 |
| Included Components | Gear Oil Additive + StopLeak |
| Item Height | 6 inches |
| Liquid Volume | 8 Fluid Ounces |
| Manufacturer | Bardahl |
| Manufacturer Part Number | 3119 |
| Manufacturer Warranty Description | Manufacturer |
| Package Information | Bottle |
| UPC | 076906031196 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck |
D**S
It worked for me
I bought a used 2007 Chrysler Pacifica that ended up having a read differential leak which turns out not to be serviceable. (You need another diff). As a last resort I bought the differential conditioner / sealer and to my surprise the leak stopped . Have since put 1500 miles on the car and still clean and dry. As a last resort I would definitely recommend.
V**9
Good product
Good product, everything is fine
K**N
Seal conditioner
As described sure hoping it stops or slows down yoke and axle seal seepage.
B**S
Really Works!
Had a small leak in differential seal on my ezgo golf cart. There was always a spot about the size of half dollar under cart after a round of golf. Since they wanted $400 to replace seal because motor had to be removed gave this product a try. Worked great, after two rounds of golf leak is completely gone!
G**S
Three Stars
No noticeable difference,
N**X
Four Stars
Seems to have solved the oil leak problem.
J**N
POOR MS. AMERICAN 3.14159...
At the age of 58 years old, Ms. American 3.14159 (the ONLY 1964 Ford Galaxie 500, Four-Door, Hard-Top Police Interceptor that is found on the WHOLE World Wide Web) had a Transmission Seal begin to leak. Got a Tube of Bardahl Stop Leak, and wonder of wonders, it fixed the old Gal's Transmission. Thanks Bardahl. She needed THAT! JCAllison
K**R
Didn't stop my leak or even slow it down
1990 Silverado 4x4 front transfer case has a slow leak. I have added the product and I will update this review in a couple weeks with the actual results. ok Been 1 full week since additive was added. I SEE NO SLOW DOWN OF LEAK. will update @ 2 weeks, been another week still I see no slowing down of leak. Will update again..ok been 3 weeks since added to transfer case and still have leakage. Lower my rating to 2 stars, JUST HIGH PRICE LUBE....NOW BEEN 3 MONTHS STILL WEEPING, AGAIN JUST REALLY HIGH PRICED 80-90 GEAROIL....
Trustpilot
5 days ago
2 days ago