I always go for the 89 octane. However, if I am stuck on the road needing gas, and the only available station has one hose for all 3 grades, I buy premium. Probably, the last person using that pump bought regular grade. With a 4.4 gallon tank, 1 quart of regular will make a difference. Day to day, I avoid the "single hose" pumps.
Dennis
p.s. I do notice a little better mileage with the premium grade fuel. When I siphon fuel from my daughter's VW Beetle diesel, my bike smokes a lot.
