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Sorry, if this has been answered previously.

Is there an easy way to determine if a station does not offer E10 without driving to each station or is all of the country forced to use E10? Same question for "summer" vs. "winter" gas? How do I know when the transition occurs?

The Shell stations in the Dallas area clearly label E10 - they would probably do it nationwide.

At one time anyhow, gas had to be labled as containing alcohol by law. Winter fuel usually ends in April in northern Indiana. I think winter fuel starts in October or November. I was told in an email by Speedway gas that all of thier fuel contains alcohol.

Hi Chris:

___In areas where RFG w/ oxygenates is required, you will find nothing but E10 or as was the case a few years ago, MTBE. MTBE has been phased out from most areas but I still see a large % of the fuel in the Norfolk-Virginia Beach area is still loaded with it. At least up through Summer of 2005. If you live in a non-attainment area from years gone by, RFG w/ E10 is being forced upon the areas pumps if we like it or not. When you move outside the zone, then you have a mixed bag w/ some stations pumps having RFG w/ E10 and others using straight gasoline or a boutique fuel.

___The following link may help and there are hundreds of others on the EPA site that you may find interesting reading wrt RFG itself.

RFG Properties Survey Data (http://www.epa.gov/otaq/regs/fuels/rfg/properf/rfgperf.htm)

___I have another link somewhere that shows a geographic spread of RFG and you can bet if RFG is in your area by mandate, E10 will be a large percentage of its makeup …

___There are some excellent reasons for using E10 although the 1 - 3% FE hit is something we all hate to give up. You may even consider yourself lucky because the Milwaukee-Chicago-Gary, IN. corridor Winter RFG formulation including E10 has got to have the lowest energy content of any fuel in the entire US of A :(

___Good Luck

___Wayne

Thank you for all your responses. Is it April yet? :D

I am assuming E10 is upto 10% Ethanol added. Is that right? And is there a Winter E10 and a summe E10 as well? Thanks.

-Raghu

Hi Raguru:

___E10 is gasoline with 10% ethanol and there are summer/winter variations of RFG (Reformulated gasoline). The Summer/Winter Reid Vapor pressure are adjusted to minimize evaporation during the summer months and aid to help light off in the winter months. It does work but the more important item is there are so many boutique fuels with different % of oxygenates and any number of chemical cocktails depending on where you live that there has to be a cost for all this game playing. Look at the link above and compare gasoline from one part of the country to another. It is mind boggling that we have not all converted to maybe 3 or 4 CBG based fuels and be done with all this unique cocktail stuff depending on where we live in the US :(

___Good Luck

___Wayne

Great question, Chris. I've been wondering about the same thing myself.

Thanks,

Bob