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Transmissions, Rear Diff, etc.

Fluid rear axle

Unread postby norwaytravco on Mon Jun 29, 2015 12:55 pm

What kind of fluid should I use for the rear axle on my m 400?
80w-90?
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Re: Fluid rear axle

Unread postby KB2CRK on Mon Jun 29, 2015 3:52 pm

According to the 76 Manual any GL-5 gear lube will work. Mopar Part # 3744994 is the oil recommended but it is just a GL-5 in the 80w 90 range.
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Re: Fluid rear axle

Unread postby Acesneights on Mon Jun 29, 2015 8:32 pm

It's a Dana 70. 80w90 is fine.
1975 Travco 270
1974 Travco 220 Parts unit
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Re: Fluid rear axle

Unread postby 77Travco on Tue Jun 30, 2015 8:35 am

I think I'm running 85w-140 but 75w-90 would be just fine.
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