They have been upping the percentage of ethanol in our gasoline here. I had heard that the decrease in mileage is similar to the percentage of ethanol used. - So a 10% ethanol mix would theoretically relate to a 10% decrease in mileage over straight unleaded. In Nebraska fuels with added ethanol are cheaper than fuels without. People tend to put in the least expensive gas they can find. - But they may not be saving any $$ with the decreased mileage.
