[taildragger]

DP, I am no auto engineer, but I did stay @ a Holiday Inn Express ;-). The auto engineers design for the E-fuels, and the engine digital controls correct for it. Some have said it senses the cooler burn and you actually get more power in turbo applications. However, Mileage sucks. I got lucky one day it is the only thing I can think of. I watched a car I drive go from 17mpg to 21 in the summer and all I can think is I got either a batch of winter blend accidentally or it was ethanol free. To this day I haven't been able to replicate that experience. It had to be the fuel, because the car ran better as well, more pep.

[dp0622]

It’s funny you say this.

I HAVE broken down the mileage I am supposed to be getting and the mileage I AM getting.

It is about 5 miles a gallon off.

I wonder what type of gas they base the mileage on.

And it seems from what you say, that it does matter.

thanks.

[2111USMC]

Yep.

My company car is a 2011 Ford Edge. I’ve experimented a couple of times and have found that regular gas without ethanol will give me about 3 MPG better mileage.

Having said that, I’ve got about 237K miles on this vehicle and have not a single engine problem running E-10.