I am pretty new to this "Ultimate Diving Machine" experience. I want
>to treat my car right, but I also don?t want to throw money out the
>window when I don?t need to. My previous cars have never required
>premium gasoline, but they have never been BMW?s either.
Gosh, you're the FIRST PERSON EVER to ask about octane on USENET!
Good thing you didn't waste your time doing a google search!