I'm running the Mobil 1 MX4-T 10 -40 motorcycle oil. It seems ok. I can grab it at the local Autozone store anytime.
The bike shifts clunky, I understand that is common.
I would use the Amzoil if it was ez to get and not sooo expensive.
I keep reading about the Rotella and get tempted to try it, but really just cant bring myself to go that way.
Send your sample of changed oil to Blackstone labs for analysis.
http://www.blackstone-labs.com/ They can tell you whether to lengthen/shorten your drain intervals or even suggest try another brand.
Its all good......
