Your position was summarized when you said, "Who cares about BTUs?"
E10 has ~3.5% less energy than gasoline. Is 3.5% important to hypermilers?
I would call it "watered-down."
Just because it has 3.5% less BTU's does not mean that you will get 3.5% less FE. Even if it did cause a decrease in FE some hypermilers are not in it for strictly FE gains. There are quite a few here that put emissions at the fore front.
Just because it has 3.5% less BTU's does not mean that you will get 3.5% less FE.
Not a math wizard but that would be something like 3.5% of 10% wouldn't it?
Since Ethanol has 3.5% less burn effeciency and E10 gas has an average of 10% ethanol...
So, I get around 54MPG on my Corolla right now.
3.5 * .10 = .35
100 - .35 = 99.65
54 * .9965 = 53.81MPG
Not a math wizard but that would be something like 3.5% of 10% wouldn't it?
Since Ethanol has 3.5% less burn effeciency and E10 gas has an average of 10% ethanol...
So, I get around 54MPG on my Corolla right now.
3.5 * .10 = .35
100 - .35 = 99.65
54 * .9965 = 53.81MPG
If the numbers are right I can live with them...
Some small displacement engines actually get better FE with ethanol. YMMV