josh99ta

iTrader: (1)

I thought all LS1 F-Bodies had to use the limited slip additive? My car was a 2.73 w/ TCS and ABS and I always used it. Now I'm swapping in a 3.42 rear from a '99 M6 Trans Am w/ ABS only (no TCS) and my buddies are saying the posi is a gear driven unit in this one, and I have no need for the limited slip additive. I've already got the fluid and the additive, and I'm trying to confirm if I should add it or not, so any help is appreciated.

jimmyblue

iTrader: (11)

Additive for Auburn, no additive for Zexel Torsen. Though I
doubt the additive will "kill" the Torsen, these really prefer a
heavy weight nonsynthetic oil.

josh99ta

iTrader: (1)

When I ordered the TA cover I ordered Redline 75W-90, which is a synthetic oil I believe. Regardless, how can you tell whether it's a Zexel-Torsen or an Auburn? Anything I can just look at and know?

j498

iTrader: (10)

Looking at the carrier.... an auburn looks like this.




A zexel carrier looks like this:



Hope this helps some


btw. can anyone tell if that zexel carrier looks like a series 3 or series 2?
I havnt really worked with gearing much, not sure how much the difference
in thickness is between the two.

ULTIMATEORANGESS

iTrader: (4)

when i switched to an auburn unit i was advised to use additive.



torsens dont need it.

josh99ta

iTrader: (1)

j498, thanks a ton man. Much appreciated. Now I know exactly what to look for.

LiquidFire350

iTrader: (8)

https://ls1tech.com/forums/showpost....85&postcount=7

98s came stock with auburn, 99-02 have Torsen

i have a torsen, so you guys are saying i dont need that addive i just went out and bought, do you think it would hurt anything by putting it in or would i just be better off by leaving it out

j498

iTrader: (10)

I think the additive is just to reduce the chatter associated with
the clutchs, in clutch style LSDs. i dont think it would do much
in an gear driven lsd like the zexel.