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

great price I assume it works like the factory stuff.

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

I only got to put half in and it worked on a thumping differential

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

Works great. Took the chatter away from the clutch pack.

As described. Does the job!!!

Works great for my Detroit Locker

works well, no chatter .

Only need 1 tube & no chatter

This stuff works!!!, My rear diff. in my 04 gmc yukon 5.3 L had a whinning sound when making sharp turns, I had the fluid in the pumpkin replaced a few days ago and it was still making the whining noise going into a sharp turn so i picked this stuff up at a auto parts store in my area , i had not heard about this stuff prior to buying it, but wanted to give it a try at only 8 bucks a tube, so i added some to the fill hole on the rear diff and drove about 20 miles to mix the additive with the rear diff fluid, well and i also went into a parking lot and made some sharp turns and presto noooo more noise!!!! im a happy camper!! I wanted to give this stuff 5 stars because im that impressed, but i`ll see how long it holds up.