gear oil opinions

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Apr 13, 2012 | 12:00 AM

andrew91fbird50

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Joined: Jan 2012

Posts: 117

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From: Dundalk MD

Car: 89 Formula

Engine: 305

Transmission: 700r4

Axle/Gears: 10 bolt 2.73

gear oil opinions

i have a 10 bolt rear with an eaton posi unit and 4.10 gears. what gear oil should i use. i am about to replace the leaky gasket and cover and want to add fresh gear oil since im unsure of what the PO has in there. the rear will also be completely out of the car for the exhaust upgrades so if anyone who helps me needs to know anything specifically about it or wants to see pictures or even wants to help me verify whats in there please dont hesitate to tell me what to look for or take pictures of. thanks - Andrew

Apr 13, 2012 | 07:11 AM

JamesC

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Joined: Aug 1999

Posts: 19,282

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From: Lawrence, KS

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: gear oil opinions

Quote:

Originally Posted by andrew91fbird50

i have a 10 bolt rear with an eaton posi unit and 4.10 gears. what gear oil should i use..... or even wants to help me verify whats in there please dont hesitate to tell me what to look for or take pictures of.

Info here:

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC