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Old 04-27-2012, 06:17 AM
DavidZ DavidZ is offline
Officially Welcomed to the 'Fest
Location: Houston
 
Join Date: Jan 2007
Posts: 283
Mein Auto: 2011 528i MSport
My wife had my car last weekend on a road trip and she filled up with regular gas. Haven't noticed any decrease in performance--if anything, the car runs smoother. But there is a noticable drop in MPGs. I'm back to premium at my next fill up.
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