for all you guys that use less than 93 octane, let's all make a vote and see who's engine lasts the longest. I have a 92 325I and there are still a few stickers on her that says to use premium unleaded. You would think the factory would know what they are talking about huh? If you don't realize, the cheap stuff does burn faster than the expensive stuff and you don't get the same acceleration, trust me. Maybe you won't feel it in a newer car but you will once you tacks a few miles on that motor.
