91 octane. whats up with that? "regular" is 87 "plus" is 89 and "premium" is 93, was it ever diffrent? it just seems a weird number to choose. maybe overseas they pump diffrent octanes? :dunno:

i just use premium always, the mileage is so good that i only have to fill up once or twice a week, and its only like $16 to fill it.