For those curious what's in conventional Yamalube 4W 10w40 that is recommended for Yamaha jetskis and boats, check this VOA post:
https://bobistheoilguy.com/forums/threads/voa-yamalube-4w-10w40.352070/
Note that Yamalube 4W is not FC-W rated.
https://bobistheoilguy.com/forums/threads/voa-yamalube-4w-10w40.352070/
Note that Yamalube 4W is not FC-W rated.