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

worked good! Half a bottle for a 2020 scat pack differential No chatters with sharp / wide turns clutches grab normal I’ll buy it again . Not much else to say.

This trans-x limited slip additive works very, very well in place of factory additives/modifiers. I had put this fluid in my 04 Chevy Express 3500 with the big ole 14 bolt rear end, and all the chattering that was going on was taken care of after throwing this stuff in during a fluid change. Its very well priced and seems to work just as well as comparable OEM fluids.

As described. Does the job!!!

easy to use and will quiet noises from limited slip rear end

Even though I used GL-5 LS (limited slip) oil when I changed the rear differential oil in my Toyota Tacoma, it only took one short ride after replacing the old OEM differential oil to determine that something was not right. I heard noises and found that the rear wheels were locking up on sharp turns. So I parked my truck and did not drive it until I determined what was happening. After a fair amount of on-line research, I discovered that this additive is required even if the specified GL-5 LS is used. Concerned if this really would actually resolve the issue, I siphoned out about 7 ounces of the GL-5 LS oil and added Trans-X Posi Trac to the differential. Took my truck for a drive and the difference was noticeable after about 10 minutes. It does what its supposed to do. Live and learn.

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

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 additive for my 02 Explorer w/ limited slip differential. Keeps the clutches from chattering.

A tube of this and fresh Mobil 1 diff fluid fixed my horrendous LSD chatter problem. Based on internet posts was originally looking for Ford friction modifier but have always had good luck with CRC products. Did not disappoint. Drives like a new car, doesnt fight me in turns anymore yet still locks up tight when really hit it. Replaced Royal Purple synthetic that said it had the modifier, but guess it wasnt enough.

Many vehicles need this, check if your project requires it. I use it when necessary and it is a great additive.