Originally Posted by charon61285
when I had to fill up with standard unleaded milage and preformance suffered.
The ethanol fuel (10%) added 1 to 2 MPG and\or appreared to have more than the use of regualar unleaded.
Thats cool.
Did you get the mpg advantage on 85%?
As far as the performance goes, the reason is the ethanol has oxygen in the chemical compound (just like NOS). That causes the fuel to burn more effectivly (and effenciently). For the same reason you get +1 to 2 mpg.
The only problem is that people generally lose 1-2 mpg on 85-100% ethanol, because ethanol has less energy in it.