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Mack oil spec EO-E for RVI transmission
in Mack Truck Q & A
Posted
Hello,
Question regarding my 1989 MS300 midliner with 6 speed RVI transmission. The manual calls for Mack EO-E oil, I assume this is engine oil? Any idea what grade would be appropriate? I am thinking either a 10W-30 or 15W-40? Please advise.
Kind regards