At 1000 miles, I tested mpg. I got 32 mpg on the first tank. Was running the F3 at higher rpm's (4000 ballpark). The next tank I backed off a bit and kept it at 3500 or slightly less. That upped my mpg to 37 mpg. I am using 97 octane with 10% ethanol.

Shortly coming up on 2000 miles. I will test the mpg again. I am expecting a slight increase. It seems to take about 3000 miles...before the mileage settles in. WARNING, WARNING, WARNING...there can and will be variations.