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bsun
08-05-2005, 11:08 AM
01 530i manual sports. Which Redline fluids do you use for differential? 75W-90 or 75W-90NS? Would it make any difference for my car between these two?
Thanks

1996 328ti
08-05-2005, 12:28 PM
One of them has an additive for LSDs. I don't recall which one though.

mlytle
08-05-2005, 12:30 PM
75-90 is for lsd's.
75-90ns has no limited slip friction modifier.

unless you are racing the car, then different rules apply...:)

bsun
08-05-2005, 01:01 PM
75W90: A GL-5+ and GL-6 spec oil, preferred for use in conventional and LSD differentials. Contains limited-slip friction modifiers for decreased noise and better wear from clutch-type LSD units. Suitable for street and track. 75W90NS: A GL-5 oil, designed for conventional differentials, but can be used in clutch-type LSD units for increased locking rates, leading to reduced wheelspin. Not recommended for street-driven LSD units!



So I assume that for street-driven, I should use 75W90, NOT 75W90NS.
Is this correct?
Thanks

mlytle
08-05-2005, 04:43 PM
ahhh, that is what my post and the official description would indicate! :)

a racer trick to increase lock up on an lsd is to put some 7w90ns in there instead of some regular 75w90. less slippery = more clutch friction.

for a street car...redline 75w90

NoSoup4U
08-10-2005, 02:02 PM
a racer trick to increase lock up on an lsd is to put some 7w90ns in there instead of some regular 75w90. less slippery = more clutch friction.

for a street car...redline 75w90

Ahh ... you reveal your secrets at last ...

I never knew that ... so, I should be using 75w90ns for my car then?

What other secrets are you "hoarding"???