It would seem that he doesn't....

[Follow Ups] [Post Followup] [Dodge Power Wagon Forum]

Posted by MoparNorm on Monday, November 07, 2005 at 4:40PM :

In Reply to: Re: Are you sure that .... posted by Ken Dunnington on Monday, November 07, 2005 at 4:31PM :

..preclude the use of 90 wt.
"For manual transmissions, and transfer cases:
Dana / Spicer, New Process, Warner, IH T-34,T- 35, & T-36
Specially formulated SAE 50 transmission oil
Heavy duty engine oil, SAE 50, or aircraft engine oil, SAE 50
Straight mineral gear oil, GL-1, SAE 80, or SAE 90"

Which is consistent with Dodge FSM's. I suppose the leeway is for climate variations. I've used 90wt mineral for 40+ years, so far so good.
MN



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