Join Date: Apr 2006
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Re: Yanmar 3GMD transmission oil confusion in manuals
Gear oil: I thought that was the SD series, using the same 75W90 range that many auto differentials and some manual transmissions use. I've seen SAE30 in Honda, 75W90 from Toyota, I'm sure there are others. But the vast majority of the non-ATF on your list are SAE30.