Jon Hagen said: (quoted from post at 15:21:08 01/07/10) As I stated in both of my posts, My Prius makes more MPG with 89 octane E10 than it does with 87 octane gasoline. E10 is 10% ethanol, 90% gasoline which is only down 3.5% on BTU's compared to pure Gasoline,
Your own admission that an engine optimized for ethanol can gain 5-7% efficiency, while only losing 3.5% BTU's with an E10 blend.
Nowhere in my post did I claim to gain mpg while burning E100 VS gasoline.
You can't cherry-pick and use the potential gains available in engine refinement for E85 and apply those to E10! Yes, 5 to 7% gain is possible for E85, thus partially offsetting the 30% that it is down on energy, thus resulting in the widely reported/measured ~23% miles per gallon loss.
You can't gain that same 5 to 7% with E10.
Better mileage with ethanol or ethanol mix than pure gasoline?........the physics doesn't support it & the argument can go on forever, BUT the real world testing by not only the EPA, but nearly every automobile magazine published, rears it's ugly head & low & behold, they all show lower gas mileage with ethanol! Surprise, surprise as Gomer used to say. Gee, I guess that's why they use higher flow capacity injectors or lengthen the injector squirt time of ethanol capable vehicles. Wow! Another surprise!
If you are happy with the result you believe your 'data?' shows you, Jon, I say keep on being happy. Just don't be offended or surprised that you are probably the only one on earth believing them. You can't get more from less, no matter what you do.
P.S. I'm not saying that you are being untruthful, just that your data, data collection, experiment variables &/or whatever are flawed.
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