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'02 torsen posi, what grease?

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Old Jun 21, 2004 | 11:22 AM
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'02 torsen posi, what grease?

Here is the question. I got an 02 SS rear end 3.42 and I don't know what gear oil to run in it. I know it is a torsen because it has worm gears on 4 corners. It does act like an open rear with no load though. I think that they are supposed to. Am I right? I have no idea if it is supposed to have an additive in it either. I have no information about these things. Can someone help? Thanks.
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Old Jun 21, 2004 | 11:50 AM
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From: Loveland, OH, US
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Transmission: 5
Gear lube (synthetic is best)

No additive
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Old Jun 21, 2004 | 01:53 PM
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
I used 85w synthetic, put a tube posi additive also.
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Old Jun 21, 2004 | 02:09 PM
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From: Loveland, OH, US
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No additive required

There's no clutches in those, so there's no need for "clutch friction modifier" additive
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Old Jun 21, 2004 | 02:17 PM
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Car: 1982 Z28
Engine: LS1
Transmission: T56
RedLine Shockproof Heavy here, my HD Torsen is a happy camper.
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Old Jun 21, 2004 | 03:09 PM
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Originally posted by RB83L69
No additive required

There's no clutches in those, so there's no need for "clutch friction modifier" additive
I had some kind of clunking noise when making corners, im guessing it was from the worm gears, put in some additive, no more noises.
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Old Jun 21, 2004 | 10:20 PM
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From: check under the car
Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
maybee you didnt have fluid enough in it or somthing. not to say you didnt know how to fill it but when i researched what to use in mine i came up with No additive required because additive was used in clutch type rears .... i donno just my $.02 ive done a few without it and all is good so far. pretty good units for the prices too.
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Old Jun 22, 2004 | 01:25 AM
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Re: '02 torsen posi, what grease?

Originally posted by spodeboy I know it is a torsen because it has worm gears on 4 corners. It does act like an open rear with no load though. I think that they are supposed to. Am I right?[/B]
correct. opposite wheel spins opposite direction when both wheels are in the air.
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Old Jun 22, 2004 | 06:30 AM
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From: Grand Island, NY
Car: 1990 Formula
Engine: 305 TPI
Transmission: WC T5
Originally posted by RB83L69
No additive required

There's no clutches in those, so there's no need for "clutch friction modifier" additive
None required to function properly.

However, Torsen recommends the friction modifier to keep noise down.

directly from their site:

Torsen for GM vehicles:

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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Old Jun 22, 2004 | 08:51 AM
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From: New Mexico
Car: 1991 Camaro Z28 5.7 G92
Engine: L98 Tuned Port Injection
Transmission: TH700R4
Axle/Gears: 3.23 Posi G80
I have 75-140 synthetic blend in mine and I have had no problems with it. Every once and a while it makes a noise when I have slicks on at the track and I am shifting hard.
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Old Jun 23, 2004 | 09:33 AM
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From: Indianapolis, IN
Car: 1986 IROC
Engine: 400 SBC bored .060
Transmission: Tremec TKO
Well, I put Valvoline 75-140 full synthetic in it with the GM friction additive. I'll let you know what comes out of it when I drive it today.
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Old Jun 23, 2004 | 02:17 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
i put valvoline 80/90w synthetic in mine. for whatever reason, mine spins both tires the same way as if it was posi when its in the air. i havent drove the car yet to see how it acts under load though
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Old Jun 23, 2004 | 05:20 PM
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From: Indianapolis, IN
Car: 1986 IROC
Engine: 400 SBC bored .060
Transmission: Tremec TKO
I drove great other than a squeak from the driver's side. I am pretty sure it is brakes because when I push on the brake with any force, it goes away. I also doesn't have any shakes or noises when I go hard threw a turn. I hope that it is just rusty brake rotors that will go away soon. It really made a difference in the change from 3.08 to 3.42.
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Old Jun 24, 2004 | 05:31 PM
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From: MD
Originally posted by spodeboy
It really made a difference in the change from 3.08 to 3.42.
I went from a 3.08 to a 3.42 also (2002 TA rear) and noticed very little difference other than cruise RPMs.

Synthetic is REQUIRED, and the limited slip is not necessary, but highly recommended by both GM and Torsen. GM recommends 75w-140
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Old Jun 24, 2004 | 10:56 PM
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From: Indianapolis, IN
Car: 1986 IROC
Engine: 400 SBC bored .060
Transmission: Tremec TKO
hey Mark 85Z28, what spacers did you use in the front? I wanted to get the ZR-1s as well, but 17X11 rears.
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Old Jun 27, 2004 | 09:01 AM
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From: MD
2"
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