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

What gear oil for 9 bolt?

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Old

07-15-2016, 05:56 PM

#1

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Car: 85 Trans Am

Engine: 416 headed LG4 (i think)

Transmission: auto

Axle/Gears: 9 bolt, unknown ratio

What gear oil for 9 bolt?

Have 85 trans am with a 9 bolt. 150k or so miles.

MachinistMark is offline

Old

07-15-2016, 06:02 PM

#2

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Car: Met. Silver 85 IROC/Sold

Engine: 350 HO Deluxe (350ci/330hp)

Transmission: T-5 (Non-WC)

Axle/Gears: Limited Slip 3.23's

Re: What gear oil for 9 bolt?

IIRC, you'll find what you're looking for in the following link:

https://www.thirdgen.org/forums/faq-...now-about.html

JamesC

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Old

07-15-2016, 11:20 PM

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Re: What gear oil for 9 bolt?

when i researched this i came up with a lot of guys using the torco rgo racing gear oil 85w140

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