What gear oil for diff's?
#1
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Year: 2000
Model: Cherokee
Engine: I6
What gear oil for diff's?
I was submerged in water. Needed to change my diff fluid. Guy at napa said use 75-140 synthetic. $16 a quart???? If this correct? 4.4 quarts in the rear and around 3 in the front would cost a fortune to change.
#2
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75-140 for the rear if you tow definitely, but I'd stick with good old dino oil; not the synthetic unless you have a limited slip. Syn has a tendency to absorb the water, not displace it like dino oil.
75-90 for the front; or FR & RR if you dont' tow much at all.
There is an on going debate about this. Search a little deeper for more info.
75-90 for the front; or FR & RR if you dont' tow much at all.
There is an on going debate about this. Search a little deeper for more info.
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Year: 2001
Model: Cherokee
Engine: 4.0 L
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Year: 1999
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If you sink your diffs often don't bother with synthetic - can get very expensive in a hurry. Otherwise yeah use 75w140 if you're beating on your Jeep or have lockers.
#10
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Better film strength, shear strength, more stays between the gears when compressed, and better heat tolerance (doesn't break down as fast). Also in some climates people report better 'feel' since the synthetic oils are nowhere as thick when cold. Probably ups your fuel economy a little bit first thing in the morning in the winter.
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