I'm lucky : "Alaska: All stations dispense ethanol-free gasoline."
This may help you find ethanol free gasoline.
I clicked on WI as an example:
http://pure-gas.org/index.jsp?stateprov=WI
This may help you find ethanol free gasoline.
I clicked on WI as an example:
http://pure-gas.org/index.jsp?stateprov=WI