rear diff fluid

[99huggerorangeZ]

how many quarts does are rear diffs take?
i am going to be using Red Line 75W90 Synthetic Gear Oil is that ok and do i need posi additive for the torsen?

[tomSS99]

hmmm..... good question man..... im gonna be putting in a clutch and stuff today....maybe i should do that too..... :mad:

[jmd]

Originally posted by 99huggerorangeZ
how many quarts does are rear diffs take?
i am going to be using Red Line 75W90 Synthetic Gear Oil is that ok and do i need posi additive for the torsen?

Just posted about this:

http://www.ls2.com/forums/showthread.php?s=&threadid=1540

3.5 pints which is 1.75 quarts

That fluid will be fine. You do not need posi additive for the Torsen.

[BlackbirdWS6]

hey, got a 97 T/A changing the trans and rear end fluid this sat, i ordered royal purple syncromax for the trans and got royal purple 75w90 for the rear end. do i need the additive with this fluid in the rear for the posi?

[jmd]

Yes on the additive, Blackbird. You do not have a Torsen.

[99huggerorangeZ]

so 2 qts should do it?

[DarkPhoenix]

Yup, you will have a little left over to put under the competitions rear tires before a race! ;)

[LS1_Disciple]

Originally posted by Blk02ls1a4
Yup, you will have a little left over to put under the competitions rear tires before a race! ;)

Yes, or in my case, to spill it in your garage and be reminded of the pleasant aroma of gear oil every time you open the door :D

[2REDGMC]

Originally posted by jmd
Yes on the additive, Blackbird. You do not have a Torsen.

that is not correct

If you are Using Royal Purple Max Gear 75w90 or any of the Max Gear products you will not need the additives.

[Blacker]

Auburn = Additive required
Torsen = No Additive required.

Redline and Royal Purple Fluids already have friction modifieres in them.

[2000 Tran Zam]

how do u know if you have an auburn or torsen rear end? i plan on changing my fluids tommorow, but dont have additive. i want to get it, but do i absolutely need it? ive got a 2000 ws6 with no tcs.

[jmd]

Originally posted by 2000 Tran Zam
how do u know if you have an auburn or torsen rear end? i plan on changing my fluids tommorow, but dont have additive. i want to get it, but do i absolutely need it? ive got a 2000 ws6 with no tcs.

99-up had a torsen standard. An SLP option was the Auburn, so that's something to look for on the SLP modified cars. If you have a normal Formy, TA, or Z28, you have a torsen.

You can add the additive later w/ the upper pipe plug, or possibly by removing the vent.

[TheSilverSurfer]

I never have to worry about that ---the dealer has replenished it 3 times in 30,000 mi.

[2000 Tran Zam]

Originally posted by jmd
99-up had a torsen standard. An SLP option was the Auburn, so that's something to look for on the SLP modified cars. If you have a normal Formy, TA, or Z28, you have a torsen.

You can add the additive later w/ the upper pipe plug, or possibly by removing the vent.

Ok, so ws6 is not slp parts correct? its just firehawk? also, whats the difference between the two rear ends?

[1BADFIREHAWK]

SLP would be SS or Firehawk. WS6 will be the torsen. The difference is the way they function. The torsen uses pressure I think and the auburn uses springs. Supposedly the auburn is supposed to transfer torque better or something but there really isn't a noticable difference I am sure.