Interesting point you make. And I wonder how different the ethanol mix would be from, say straight gas with accumulated moisture from condensation in the tank? I think things may be ok if you purchase/mix/use the RFG on the same day as riding or within some reasonable time frame. I don't think keeping RFG around for a longer time is a good idea due to its affinity for water. On a 4-stroke forum, a canadian fellow said he had used RFG in his 4stroke for a long time with no apparent adverse effects. I'm thinking that if you keep things mixed up in the tank, if there is moisture in there, it will become part of an emulsion and carry thru the combustion process. Still, I like to hear about actual experience folks have had with use of RFG in their two-stroke engines.