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Old 04-16-2012, 09:16 PM   #205
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Join Date: Nov 2011
Location: 15 acres on the river
Posts: 1,679
My Ride: 325Xi
Originally Posted by jasonbimmer View Post
if you drive that often, you might consider something more economical.
I'll fill-up 2-3 times per week depending on how many miles I drive.

I've never tried 87 Octane in my 325xi but will float between 89, 91 & 93 octane. While I don't notice any performance increase... I DO notice that the higher the octane the slightly better fuel economy I get.

89 = 23MPG
91 = 24 - 24.5MPG
93 = 25 - 26MPG

This is something I have kept an eye on for the past 6 months.
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