Which differential do I have? Pics inside

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Sep 27, 2010 | 09:14 PM

araber89

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From: Holmes County (thats right Amish Country), OHIO

Which differential do I have? Pics inside

So i'm in the process of a gear oil change. Drained the rear end and this is what I have. My question is do I need the LSD Additive or not? I believe its the Torsen and I don't need the additive but I was just checking

Thanks
ARaber89

Sep 27, 2010 | 10:42 PM

nealws6

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From: Anaheim, CA

don't need additive. torsen has gears (not clucth). you'll be good with just gear oil

Sep 27, 2010 | 10:43 PM

bayer-z28

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From: N. Falmouth MA

Can't answer the diff question other than the housing type, but if you're going with RP oil, you won't need the additive. That's all I can add on this one. (no pun intended)

Sep 27, 2010 | 11:05 PM

Nemesis350

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From: Central TX

Quote:

Originally Posted by nealws6

don't need additive. torsen has gears (not clucth). you'll be good with just gear oil

This is pretty much it to answer your question. The GM additive is suppose to be for the auburn units, the clutch pack differential (the one with the yellow springs).

Some people say to put it in the Torsens too.... i have no idea why they would.

Sep 29, 2010 | 02:51 PM

alamantia

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From: NJ

Quote:

Originally Posted by Nemesis350

There was a bulliten a while ago on torsens that had "a rusty screw noise" the cure was to add the friction modifier

Sep 29, 2010 | 03:04 PM

Nemesis350

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Quote:

Originally Posted by alamantia

There was a bulliten a while ago on torsens that had "a rusty screw noise" the cure was to add the friction modifier

Straight from Torsen Site:

Is it true that the Torsen unit in the production Camaro needs the GM modifier added?
GM issued a technical bulletin adding modifier to the rear axle oil. This was done to quiet what we call a "Rusty Screw" noise that we heard in a very small percentage of vehicles. This does not happen in all cases, however to address owner's concerns we asked that the modifier be used in all instances to insure that the driver would not get this noise. When replacing the fluid it is at the owner's discretion whether or not to add the modifier. Elimination of the modifier does not affect durability of the differential.

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