rear end 8.8
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Joined: May 2001
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From: dearborn heights, mi usa
rear end 8.8
can somebody tell me if the 8.8 uses a gasket on the cover? and what is the correct gear oil viscosity for it? i know it needs the modifier, and the manual states something like "ford high performance gear lube" does not list a viscosity... is it synthetic?
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Joined: Sep 2000
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From: Mpls, MN
It sure is helpful when people state which truck they have....
If it's a late model F-150 with an 8.8" rear end, it uses 5.5 pts (2.7 Qts) 75W-140 (Ford P/N::F1TZ-19580-B) synthetic fluid. If it's a limited-slip, you need to add 4oz friction modifier (Ford P/N::C8AZ-19B956-A). The Ford fluid is around $20.00 per qt but is very good and readily available.
Use RTV sealant for the gasket.
Use RTV sealant for the gasket.
Last edited by AjRagno; Apr 30, 2002 at 04:40 PM.