I am pretty new to this "Ultimate Diving Machine" experience. I wantto treat my car right, but I also don?t want to throw money out thewindow when I don?t need to. My previous cars have never requiredpremium gasoline, but they have never been BMW?s either. I read in themanul to use 91 octane or above to avoid knocking in the engine. But Ihave also heard reports that unless you are driving a super highperformance vehicle that your car won?t know the difference between87, 89, or 93 octance gasoline. I have a 2003 330 CI, It is the mosthigh performance vehicle i have ever owned, but i don?t know if itqualifies as needing the higher octane gas...and with the gas pricestoday, if it doesn?t need it, I could save $5-$10 a week by gettingthe lower gas. What does everyone think? Has anyone had experiencewith knocking in their engine from lower octane gas?

91 or 93 octane you now drive a car not only a better vehicle but in orderto get better gas mileageand performance and most of all stay away from the shop "dugies25"

Do I need the expensive gas???

Mar 28, 2005 42 Replies

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Pete 20 years ago

"joe Millionaire" wrote

Penny-wise and pound-foolish?

Taking into account higher fuel consumption with the lower octane, you're certainly not getting rich either way.

Pete

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Fred W 20 years ago

You don't get rich by *spending* money, ever.

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Fred W 20 years ago

I'm sure you are right that buyers of these cars are motivated by that feeling, I just don't understand this sentiment. If you are *serious* about being green you would just a) walk to work b) commute by bicycle or c) commute by internet.

But he drives 4 times as far in a year as I do so that average mileage is dropping rapidly... ;-)

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