Has anyone used E85 for more towing power?
My F150 5.4 is a flex fuel vehicle and I have used E85 fuel in it. There was a noticeable decrease in flue mileage and probably an increase in HP and torque. All the reports state this Ford V8 will ma...
Forum Discussion
As others have posted, ethanol has less energy content than gasoline. But the reason why they can make more power is that the high octane allows for more aggressive timing and ignition curves. If an engine was optimized for ethanol, it could get almost the same fuel economy as gasoline engines. A Subaru owner did a write up on how he optimized his wrx to run on the stuff and got the same fuel economy as he did when it ran on gasoline.
