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Message: <blockquote data-quote="soberups" data-source="post: 340892" data-attributes="member: 14668">Not interested. Pure ethanol wont run well at all in a gasoline engine. My minivan can run on E85 (85% ethanol 15% gasoline) but the gas mileage drops by over 1/3.Ethanol has less btu's of energy than gasoline, but a higher octane. If you want good performance out of ethanol, you need to have a much higher compression ratio in your engine. This would mean you couldnt use gasoline in it at all. A standard gasoline engine...with lower compression...can run an ethanol blend of up to 85%, beyond which you start running into cold-start and driveability issues as well as poor overall mileage compared to straight gasoline.For a fraction of the cost of the efuel100 unit, you can set up a biodiesel processor in your garage to make biodiesel out of used (or new) cooking and vegetable oil.</blockquote>