stroke

Yes I've seen the oil levels come up, have seen a 1L gain on 50 HR service interval. Lots of schools of thought on why this happens, I think I'll wait and read comments on the subject before I say anything.

Thanks for the octane lesson........just trying to keep it simple

Check with your area Mastercraft Dealer, but I've recently been told by mine that it's no more than 10% ethanol. Here at Calgary we run 6.2 with 91 octane, at our elevation the power diff between high octane and reg fuel is big. I believe we (predator bay waterski club) we have sourced 91 octane with no ethanol blend.

Sounds like it is coming from belt drive. Pull the belt off and run for as short time as possible to see if noise goes away

Broke a Nano 1 week ago, had no problems dealing with Goode