The manual says regular, the parts guy says mid-grade. The service manager says minimum 93 oct (high test). Started running lousy after a fill-up with mid grade and mgr. says that's the problem.
My understanding is that the higher octanes burn slower which is why you use them in higher compression engines. That does not make them more powerful or better than regular grade gas in a vehicle designed for regular. In fact the reverse would be true.
So what's the concensus? I've only had a bike for a little over a month.