Transmissions and Drivetrain Need help with your trans? Problems with your axle?

what kind of fluid do i need?

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Old

Apr 17, 2005 | 02:19 AM

#1

Thread Starter

Junior Member

Joined: Mar 2005

Posts: 78

Likes: 0

From: riverside CA

Car: 91' Camaro, 71' MERCEDES

Engine: Camaro 3.1L

what kind of fluid do i need?

i have a 1985 firebird with a posi rear end. i was told that i shouldnt put regular gear oil in because i could mess it up, what kind of gear oil should i use,does it need to be thicker or thinner.
thanks.

Old

Apr 17, 2005 | 06:01 AM

#2

TGO Supporter

Joined: Aug 1999

Posts: 14,811

Likes: 1

From: Jackson County

you can use dino or synthetic doesn't matter. if you have a clutch type posi you need gm posi additive along with the oil

Old

Apr 17, 2005 | 11:29 PM

#3

Thread Starter

Junior Member

Joined: Mar 2005

Posts: 78

Likes: 0

From: riverside CA

Car: 91' Camaro, 71' MERCEDES

Engine: Camaro 3.1L

so i use regular gear oil

Old

Apr 18, 2005 | 12:07 AM

#4

Supreme Member

iTrader: (4)

Joined: Jul 2000

Posts: 6,522

Likes: 92

From: Aridzona

Car: `86 SS / `87 SS

Engine: L69 w/ TPI on top / 305 4bbl

Transmission: `95 T56 \ `88 200-4R

Yes. Get 80/90 and add a limited slip additive: GM stuff is good.

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