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Re: BUSTED: why some of you complain about you car's performance on E85
The original article qouted someone that is ignorant of anything involving engineering or combustion engineering. Of course you'd start with a lower octane gasoline, as other posters have said the ethanol raises it anyway. Increased octane above the level required to prevent pre-ignition doesn't help, and may hurt fuel efficiency.
The problems with E85 in dual fuel engines is that ethanol has a lower heat content, and the compression ratio of today's engines optimized to run on gas, does not get the most out of the energy in ethanol. I believe compbustion temperatures are also lower, leading to efficiency losses.
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