I just got a new rider with a 21 Kaw. I need to do the first oil change. i run amsoil in everything else. The dealer told me the rings would not seat properly if I did not use regular oil for the first 500 hours. I called Amsoil they said to use thiers. They said it will run smoother, but the rings will be fine. What do you guys think? Should I use the amsoil or regular oil?