Join Date: Jun 2000
Location: Tualatin, Oregon, United States of America, North America, Earth, Milkyway Galaxy, Universe...
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Re: Synthetic fluid question
Usually you use the same weight as is recommended to be in there. I think an 80-90w would work for the diff. Not sure on the tranny. Mine took 75-90w I think. Transfer case should take ATF. This is assuming it's for a TJ, correct? Just an FYI, if you have some leaks, synthetic will leak worse.