seems like there are more gas stations around offering non ethanol gas. I typcially use the highest octaned fuel offered at a station, which is ususally 93. My question is what would be better 93 w/ethanol or 91 pure (no ethanol)?

 

Non-ethanol 91 is far superior to ethanol 93

 

Ethanol contains less energy per ounce. Assuming your bike is tuned to run on 91 octane (which it is), you will get better mpg with the 91.

 

appreciate the responses - non ethanol 91 it will be whenever possible!