Ive heard yes...as well as no. I just changed out the old factory fluid
with Full Synthetic Mobil 1 Rear Diff. Fluid (17,000 miles) ; is Mobil
1 Syn. Diff Fluid acceptable to Dodge Specs on the Rear Diff ??
Absolutely. The only thing "special" is a limited-slip additive, if you
have a limited-slip rear. Any parts store will carry this, and the D70 axle
takes about 8oz. of additive. If it turns out that you need this (ie. you
have a limited slip differential), you'll need to either suck some fluid out
from the fill plug hole, and add the fluid, or just jack the rear end up (or
park on a hill, nose-low) and add the fluid (an extra 8oz. won't hurt
If you don't know if you have a limited slip differential or not, put the
van in park, jack up the rear, and spin a rear tire. If you can spin it
(with the other tire spinning in the opposite direction), you do NOT have a
limited slip. If you can't turn the tire, then you DO have a limited slip,
and should add the modifier to prevent clutch chatter (ratcheting noise
coming from the rear end while going around corners).
Dave; why are you posting as fast1970Vette *and* DaviinLakeVilla? Have you
got some hidden agenda of perhaps answering yourself and agreeing totally
just in case everyone else thinks you're talking out of the wrong hole? As
they say; there's nothing new under the sun!
My part-time website is at http://5110.sytes.net
The full-time one is at http://www.geocities.com/spmf38 , but there's
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