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Differences in gear oil specs

   
Old Aug 24, 2011 | 02:58 PM
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90_cherokee
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From: Sierra Vista AZ
Year: 1990
Model: Cherokee
Engine: 4.0
Default Differences in gear oil specs
Factory specs say to use 75W-90 on front and rear diffs

Will anything bad happen due to using 80W-90
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Old Aug 25, 2011 | 07:56 AM
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ShowMe Cherokee's Avatar
ShowMe Cherokee
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From: KCMO
Year: 1998
Model: Cherokee
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No, nothing bad will happen, unless you have limited slip in the rear and you need the friction additive. Your diffs will be fine with 80w90 otherwise.

Greg
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