If it's made for wet clutch use, they did not add what would make it slip. Amsoil was best I have run. Mobile V twin at Wal Mart now less cash than Autozone. FYI. The Mobile M1 110 Oil filter fits and I would run 6K like that no problem maybe even push 8 depending on how I rode and what I did with it and how it looked. I used to own a Class 8 Truck and Truck driver swear by Shell Rotella for use in certain engines, I used Mobile Delvac just because Caterpillars run better with that in it.

The dealer will always swear by Yamalube, I am sure they have to sell so much of it. Yamaha will always recommend it. Just know that someone else makes it. I used to PU at a place that packaged oil. The same oil squirted into about 12 different brand bottles, then they split up and additives went in. The only difference. Some truckdriver somewhere knows what base yamalube is from. It's not high dollar you can be sure of that.

And as a side note, Cambell's soup also packages store brand soups, and I won't eat a Hostess product after walking through the factory in TN. I never saw so many overflowing mouse traps and spiders in webs above the food lines.