Quote:
Originally Posted by adouglas
Not entirely true. "ENERGY CONSERVING" oil makes the clutches slip. If the label doesn't say that, and the oil is the correct weight and has the correct service rating, then it will be fine even if it's "car" oil.
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NO IT WON"T!
I've beat the s*** out of this many times already, and the correct answer is NO - auto oils are not good for a cycle! And it has nothing to do with Friction Modifiers!
It's all about the levels of ZDDP that are in the oil. An engine with a solid cam system (non-roller) needs certain amount of the additive ZDDP to protect the cam/lifter/rocker from galling in certain situations. Current auto oils are designed for use with roller cam systems and don't have adequate levels for a non-roller cam system like almost all cycles have.
Return the oil and buy Rotella T6 - or any diesel oil. All diesel oils have safe levels of ZDDP. Friction Modifiers are only present in oils with a high rating of 30 or less - so it''s not the issue with a 40-grade oil - ever.
And Rotella T6 is JASO-MA rated also. Win/win.