Quote:
Originally Posted by ProDigit
But for normal cars, they will actually lose MPG, not only from the lower energy density of ethanol, but also due to the slower combustion of higher octane fuel. And unless the engine advances this slow burning fuel, it's going to result in lower MPG, lower performance, and lower efficiency overall.
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They don't always lose MPG, pages 20-21, Camry got it's best MPG on E30,
FFV Impala at E20, Taurus at E30. 3 of 4 cars tested got better MPG with a ethanol blend.
http://www.speedperf6rmanc3.com/cont...evel_Study.pdf