Hi! new to the cartalk community and sorry to hear that you guys are going to hang it up! before you go, I have a question about the “up to10% ethanol” at the pump. I thought I noticed a big fall off in our gas mileage in our 2004 Subaru Outback, and first blamed it on our cold winters (you all have a great archived post on that topic!), but now I’m wondering if the addition of ethanol to the gas might be partly to blame. This theory developed when, in Wyoming, I filled up at a station that advertised “no ethanol” and found my mileage to be at my new-car levels; next fill up, on the 10% ethanol stuff, my mileage dropped about 20%. I know that, in Wyoming, your mileage will vary depending on which direction you are driving (east or with the wind vs. west or against the wind), but these two fill ups were both heading east. Long story short (too late!), I’m starting to think that the ethanol mix is really hurting my mileage. Is this just my imagination, or have other folks noticed the same thing?
I know the ethanol mix is supposed to be better for the environment, but if I have to burn five tanks of gas to cover the same miles that four tanks used to cover (my math is probably backwards there), am I still helping the environment?