YamahaGenuineParts.com said:Hi there, this is an easy one......Yamalube !
The key thing here is make sure the oil you decide on is readily available and of a well recognized quality, as mixing of Amsoil and Yamalube is not recomended, also use only non-friction modified oils such as Yamalube as there is a big difference between say Yamalube 20w40 vs Automotive 20w40..... the automotive equivalent will contain friction additives to improve your mileage......not exactly the stuff you want your clutch immersed in.
Remember shinny side up !
Depends upon your mindset, but synth offers advantages over dino, especially with multi-vis dino due to the added polymers which can break down.vermin99 said:What is the beniefit on going with synthetic rather than petroleum based oils. Less frequent oil changes? When I change my oil it still looks new.