Yep I agree that flying a new motor is the best way to break it in. I always just fire them up on a stand just to make sure everything is right befor I put it in the plane. So when you fire the engine up do you use a starter or do you just flip the prop? Right now I am running a mix if 32-1 in my fule tank with super-M low smoke oil. I have ran this oil for years in my bikes and never had a problem with it.