Synthetic Oils

[rxrider]

Yet another what oil to use thread, this has been beat to death. Do a search, most has been covered last season. No new oils to speak of, no new engines, and now new oil requirements for the 2010 sleds, but I could be wrong LOL.

 

[Srxspec]

Yamaha 4-stroke snowmobile do not use a clutch plate system, but instead they utilize a mechanical one way locking pin design instead of a clutch plate type system.

 

[Alatalo]

Yamaha 4-stroke snowmobile do not use a clutch plate system, but instead they utilize a mechanical one way locking pin design instead of a clutch plate type system.

I can not really see why oil with slippery additives would hurt this design, especially not in comparison to a clutch plate design.
Still, the workshop manual tells you to avoid this kind of oil.
Because of a reason or because they just copied the text straight out of the streetbike manual...?

 

[rxrider]

It's from the street bike, because of the way the starter is in the R1 bikes of the times.