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View Full Version : REAR-END LUBE CHANGE


DURA-MAX3
07-12-2002, 16:08
Can anyone tell me what the difference in the 75-90 and the 75-140 oil that some people are putting in the rears. if i pull a trailer would the 75-140 be better. thanks in advance...
Joe.G
07-12-2002, 16:47
Factory says 75-90w, why wouldn't it be OK? Just be sure you use a synthetic, that's what was in it from the factory.
FirstDiesel
07-13-2002, 06:12
The way I understand it use the 140 w if you tow a heavy trailer constantly. Otherwise stick with the factory weight. And yes use a good synthetic lube.