so you run amsoil or mobile 1 ??
I go with the Mobile 1 just because of convenience. I am to get it at my local advanced autoparts which is a lot closer and cheaper than a bike shop that has a readily available supply of Amsoil. I change my oil every 3K miles and have had no problems whatsoever. If I was racing it at the track every weekend and had a ton of $$$$ into the engine maybe I would shell out the extra dough just for piece of mind