What is the best PWC oil?

[MurkyAsparagus]

I have a 2018 Kawasaki STX15F and have heard of people saying Kawasaki Oil, Yamalube, Liquimoly PWC, or even Shell Rotella is the best. What do you think is the best?

 

[skyactiv]

The reality is that no one knows what is best. People will recommend an oil but it wont be based on real world proof.

 

[ripcord]

Best at what? Best for wet clutches? Cylinder wear? Shear stability? Resistance to oxidation? All we can do is pick an oil that meets or surpasses the specifications required by the manufacturer. To do more would require very sophisticated lab equipment and qualifications far beyond all but a few members of this board. Even they would be hard pressed to declare an absolute "best" oil for something.

 

[jtwrace]

Mobil 1 0W-40 is what I used for 500 hours in my Yamaha.

 

[repairman54]

Can't go wrong with any modern full synth. oils.

 

[Ursatdx]

I ran T6 5w40 in my 09 FX SHO w/ supercharger for 13 years and 400 hours.