I was doing some reading on ethanol today and was wondering if it would be a better fuel for our bikes than premium. Ethanol (which is only 10% of the fuel the rest is unleaded) runs cleaner and is of a higher octane. Does anybody know if this would translate into a cleaner top end (valves, ports, etc...) as well? Also, just what is the octane rating of E10? Thanks for any feedback, I'm sure many people would like to know!