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

Good stuff! Here is how i used it: How to change the differential fluid in a 2012 Dodge Challenger 3.6 liter. Link: https://www.youtube.com/watch?v=3HJ6zoGZy5k

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.

Works great

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.

Great product

Installed new gears which I purchased here and since my 67 GTO has Safe-T-Track, it requires this additive. Works as it should, just pour the complete contents into the rear end prior to filling with fluid. This helps it mix itself when you add the diff. fluid (which I also purchased here).

It is in the axle and the gears are turning. No noises, thumping, or cracking, so it must be working.

Works great for my Detroit Locker

Diff sounds good

As advertised