6 Driving Tactics to Save Gas This Summer: Avoid Ethanol
Avoid Ethanol When Possible
Gasoline that has been cut with 10 or 15 percent ethanol, called E10 or E15, is an mpg killer. Why? Gasoline stores more energy than ethanol (119,000 Btu per gallon vs 80,000). So it takes more ethanol than gasoline to go the same distance.
I've been saying that for years, finally someone is catching on.