I have been lurking for several months. I agree to the consenus that ethanol kills MPG. My normal drive is 15 miles of 50-60 and then 45 of Interstate drive each day. I saw this AM how much cold air (30) will kill MPG, it made almost 5 MPG difference over the same stretch of road from this AM to the PM this afternoon.

My question is, if you had no choice but to get Less than 10% Ethanol at a station, would it be benefical to get a higher Octane to offset the Ethanol? We are going to Disney this weekend and all the Hess Stations on property all have the stickers "Less than 10% ethanol". But sometimes, their Md Grade is cheaper than Regular off property.

Maybe some day soon, I will understand enough to get a scan gauge and know how to use it