Limited slip additive...
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
I've used amsoil severe gear since I bought my car, never used any additive and never had an issue... try it without and if you hear noise add a little at a time... you don't want too much additive in there or it could cause the clutches to slip when they shouldn't be slipping
Team Owner
Joined: May 2001
Posts: 87,357
Likes: 1,592
From: Western NY
I've used amsoil severe gear since I bought my car, never used any additive and never had an issue... try it without and if you hear noise add a little at a time... you don't want too much additive in there or it could cause the clutches to slip when they shouldn't be slipping
Racer
Joined: Aug 2015
Posts: 323
Likes: 68
From: Sacramento California
Yes, you can buy gear oil with limited slip additive already added. Most guys like to use gear oil without it so they can add the amount that works best for their application.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
DO NOT ADD MORE THAN THE differential wants!! IN THIS CASE MORE IS NOT BETTER.
Most people use a GL-5 lube with the additive already in it. If you do some very tight figure eight turns in an empty parking lot and you don't get any limited clutch chatter,,, LEAVE WELL ENOUGH ALONE!
If you get differential limited slip clutch chatter, add just a LITLE more of the additive and go back out and test.
Most people use a GL-5 lube with the additive already in it. If you do some very tight figure eight turns in an empty parking lot and you don't get any limited clutch chatter,,, LEAVE WELL ENOUGH ALONE!
If you get differential limited slip clutch chatter, add just a LITLE more of the additive and go back out and test.
