ethanol destroys your engine as well..
tman's right, ethanol production is only possible thanks to the massive agriculture subsidies we dole out every year.. it almost takes as much input energy to produce an equivalent amount of ethanol energy... check it:
http://zfacts.com/p/60.html
gotta love how the federal government essentially directs what farmers can grow, and who they can sell to - just as if this was collectivism under stalin.. they don't let farmers compete in a free market, so they use taxpayer money to subsidize ethanol production - despite the fact that ethanol is pure shit for an oil substitute..