no thanks on the trade man. i need the CAAAAAAASH! but ye it takes 93 octane. not that bad though espically for a fast car, i got 275+ miles on a full tank on my other GSR. i think its an 11ish gallon tank, mabye, and i still had more to go. plus i dont baby mine(didnt wanna run out all the way) its around 25MPG. and thats with headers, CAI, Skunk2 IMO and chipped to dump MORE gas. i know the stock GSR gets even more. ESPICALLY since it has 42k on it. i also have a set of used rotors for it which are still clean!