The formulation of gas where you live

[bamma]

I was just curious if there was ethanol in my gas. After doing some research, I found a couple of maps to give others an idea of what gas requirements are throughout the U.S. I thought some people might be interested.

I found out that my area has just over 10% ethanol, which explains while my average mpg is a little lower than many others.

The third link below is very informative regarding the composition of fuel in many areas of the U.S.

http://www.mobil.com/USA-English/GFM...soline_Map.pdf

http://www.epa.gov/otaq/rfg/whereyoulive.htm

http://www.epa.gov/otaq/regs/fuels/r...rf/rfgperf.htm

http://www.epa.gov/oms/rfgecon.htm#2

[demoncleaner]

Good info for summer travels and where to avoid Ethanol gas if your can. I lose 5% mpg on E10% even though EPA says only 2%. In my tests (I have 100% gas here) its always 1 mpg loss returning from NH or VA where they have E10% gas. Wife's car loses 2mpg.

Doesn't sound like alot, but at $4+ a/gallon want maximum mileage.

[05Moose]

Hey, thanks for the link. I knew we were year-round here. I thought it was the whole west coast since someone in the forums in Washington state mentioned they were year-round too.

[dalkinn]

The state of Wisconsin mandates 10% ethanol. I did notice a drop in mileage
when the law went into effect, but it is even more clear when I fill up in Minnesota where ethanol is not mandated.

In my experience it is ~2 mpg drop which makes a noticeable difference in the range capacity of a tank of gas.

[bamma]

Ethanol gas dropped my mpg by 2-3 as well.