Gear Oil
#1
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Year: 1989
Model: Cherokee
Engine: 4.0
Gear Oil
Is coastal or valvoline/high performance 75w-90 any good? Its going in my d30 with powertrax no slip locker. Dont wanna put total junk in there and tear up the new locker.
#2
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
You won't tear it up. Personally if you're not taking it for a swim often I'd run a heavier 75w140 just on account of the forces when those things ratchet.
Or if the manufacturer specified a grade use that.
Or if the manufacturer specified a grade use that.
#3
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Year: 1989
Model: Cherokee
Engine: 4.0
They just say w/e your manufacture suggests. If heavier is better for the locker and for the 4.88s that will be going in to compensate for my 36s
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