Which gear lube?
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More Turbo
Joined: Mar 2011
Posts: 592
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From: Heber, UT
Which gear lube?
I have a 94 f150 that I want to flush the rear diff on and was wondering what gear oil to use. I am pretty sure I have the limited slip rear end so can I used 80-90 or do I need something lighter?
Elder User
Joined: Dec 2008
Posts: 805
Likes: 1
From: Small town Iowa
There's also a lot of us that switched over to 75w90 and 75w140 and if you want the best of both 75w90 with 20% Syn stabilized at least with Lucas but is there even another brand of lube on the market
Elder User
Joined: Dec 2008
Posts: 805
Likes: 1
From: Small town Iowa
It's a limited slip 3.55 ya I was gonna go with 75w140 in the rear but since I live in cold climate I called Lucas and they said 75w90 with the stabalizer is a happy medium and they said but I'd call and double check there Syn gear lubes already have friction modifier
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