Diff Chatter while turning = Bad Diff?

[T.Dot_E30]

I just installed a used 3.73 lsd in my car.

It is quiet when going straight, but the odd times when turning I hear some chatter.

I used 75w50(i think) Redline fluid which said it was good for LS.


Is this a sign that the diff(clutches?) is no good? I open'ed it up, it looked very clean inside, changed the seals, and installed it. From what i could tell it actually look better than the last one i had....but im no expert.

Any suggestions?

EDIT: Actually i think it was 75w90, i have to double check when i get home.

[Knockenwelle]

Need LS diff additive.

[jlevie]

Redline 75w90 has friction modifiers, 75w90NS doesn't. If the OP used Redline 75w90, chatter from the diff while turning might well mean a problem in the differential.

[T.Dot_E30]

magic potion fixed it, could have sworn i bought the redline that was for limited slip units.