“In Illinois, I can not find a station that sells ethanol-less gas.”
It depends on what part of the state you are in. You are more likely to find it available in farming communities (tractors, etc.) and near lakes (boating). Here is a link for a list of Illinois stations. Notice none in big cities like Chicago, Rockford and Aurora. I used to get mine at an unmanned station in Davis Junction, just south of Rockford. No account needed, though.
http://www.pure-gas.org/index.jsp?stateprov=IL
thanks. see my post #24.