Bar's LeaksAxle and Differential Gear Repair, 16.9 Oz

Stopped a slow pinion seal leak on my 2003 Tahoe. Easy to use, works as advertised.

Noticed a leak while in arizona, wasn’t expecting much if anything. I am surprised because so many “snake oil” products don’t work. My pinion seal was leaking had about 800 miles to home. Put it in and topped off differential when I filled up with fuel. The next fuel up about 350 miles I checked the diff, no leak, checked to be positive I had fluid in it still and was surprised it was 3/4 full still. Topped it off and went on. Checked the next fill and was still full. I’m happy, but still getting seal replaced. It worked in a pinch!

I have a 2003 Land cruiser that leaks front diff fluid (front axel seal) I bought it and discovered the leak when changing gear fluids. The front diff fluid may not have been ever changed in 205,000 miles. The fill plug differs from the other plugs in that it is a torx. It looks like someone tried to get it out with a hex and failed. Anyway when draining it came our as a gelatinous black goo. The plug has a long tail of metal particles in the goo.. Except for the black goo very littke fluid came out. Anyway I changed the fluid and the leak was obvious and the diff whining as well. I used this product and it seems to have slowed the leak somewhat but the whining is still there. In all fairness I haven't driven the vehicle that much after adding the product. So it may require more miles as inducated in the label. I gave it a 4 because I believe its doing something sliwing the leak and may work better if I drive more miles at a time. I also think the damage to the diff and seal may be too severe to remedy with a chemical.

My girlfriend has an 08 rav4 that had a leaky rear axle seal and viscous coupler. The leaks were both fairly small but within a month the differential would be down to about half full which made me very weary whenever she had to go somewhere. The last thing I would want is to put a rear diff in her car. I typically don't trust these stop leak type of products because in my experience they're usually just snake oil. I read the reviews and figured I had nothing to lose so I tried it out. I must say this stuff is amazing, I added just a little bit over the recommended amount to the rear diff and 2 months later the fluid is still full. I often look under the car to check for drips and there is never a drop. There used to be small drops of gear oil hanging off of the diff about to fall onto the ground but this has completely stopped. You can still see where a very negligible amount of gear oil is leaking down the side of the diff below the seals so I don't think the leaks have stopped 100% but more realistically they've probably stopped about 90-95%. This additive is probably more of a temporary fix because leaking seals usually get worse over time but it's gotten me 2 months without having to pull cv axles and replace the seals so I am very pleased. I cannot speak on the gear repair or ability to stop noisy rear axles that this product claims because I didn't have that issue but it's ability to stop leaks seems to be great. I had very slow leaks and it did well for me but I doubt this stuff would help with more serious leaks. Overall I think this is a great product!Quality: 10/10Price: 10/10Leak repair: 9.8/10

Less than half of bottle stopped my leaking differential on my garage floor. So far so good. Would try again if don't want to replace gasket. Old jeep not trying to invest to much time and effort. Would recommend definitely.

It’s a treatment seams to work

Stopped leak in my bar immediately.

Had a small amount of gear oil leaking from one of my front axle seal. Seems to have stopped for now...