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I can only provide a sample of 1. One tank of German E10 blend versus all my pure gas fillups.
Guess what? That one was my best ever by almost 3%...
(see my fuel record; links under my post)
Conditions were good for that tank but I feel that if it really were worse by 5% or more then I would not have broken my record like that.
Cannot easily get E10 or E15 over here, and certainly not as cheap as the regular at my local at saturday discount... or I'd be sure whether this was a freak case or not.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.
Last edited by RedDevil; 08-07-2013 at 05:02 PM..
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