Quote Originally Posted by akspyderman View Post
My experience: Tried 87 octane for the first 3 tanks this year on RTS--the bike did not seem to run as "peppy," also noticed less fuel mileage per gallon. I'm back to 91 octane untill I can't afford it any more. Also drive a Subaru Tribca (V6 and recommended 90+octane)--exactly the same results. Back to premium.
Careful, there is a break-in period regardless of what fuel you are running and your mileage will get better over the first 1000 miles...