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Old 05-06-2010, 01:36 PM
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Bignuke's Avatar
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Location: Fort Mill, SC
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Dana 30 diff fluid

Hey guys
going to change my front diff fluid... What oil should I put in? I change my rear not long ago buy can't remember..

Dana 30 1998 sahara 4.0L 5 speed


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Old 05-06-2010, 02:08 PM   #2
Knows a couple things...

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Location: Escondido, Calif.
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The differentials are not real fussy about the exact viscosity gear lube they run on, just make sure it is a GL-5 spec'd gear lube. 75W-90, 80W-90, 90W-120, etc. are all fine. If you tow trailers much, go for the higher viscosities like 90W-120, 80W-140, or something close. Personally, for the differentials, I prefer a non-synthetic gear lube as I believe the gears run cooler with a dino oil... and so do many of the custom axle builders like Currie.
When you have a choice, buy American.
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