K&W 402508 Trans-X Posi Trac Limited Slip Gear Oil Additive - 7 Fl Oz

Smooth posi traction.Product works.

I picked this up in a pinch for my 2008 Ford Mustang GT when I was changing our the rear end gears. I couldnt get my hands on the Ford friction modifier, so I picked up a tube of this instead. I was a little skeptical because I knew nothing about it. However, is been two weeks since I put this in my differential, and everything has been just fine. I dont get any chatter from the limited slip differential. Everything feels normal with the car. I would use this again.

Followed the directions and no issues here with my 2006 Toyota Tundra

Stopped my rearend chatter.

Application: 1982 Mazda pickup (manual transmission) that was hard to shift from first to second when cold. This more sllippery gear oil has improved the ease of shifting. The hard-to-shift-when-cold probllem was long standing and had been cured before with a similar product. In my last transmission oil change, the mechanic did not add a limited slip gear oil, and the problem came back. Adding this oil to the tranny resolved the problem.

Great product

I had to replace all of the side gears, spider gears and clutch packs in my 8.8 Ford Trak-Lok. On opening the box I was worried about this products validity, as it did not smell like a rotting half dead cats peed in the box. The stuff from Ford typically does smell wicked awful. I went ahead and used it to soak the clutch plates ahead of time, and then added the rest of the tube to the gear oil as it went into the differential housing. It seems to work fine, the rearend has not chirped, clunked or barked a tire since.