During a recent vacation trip to North Dakota and Minnesota, I found that ethanol-free gasoline is available at many gas stations in both regular and premium, while in Montana it is only available in premium. The Wave and Heights Conoco up until a couple months ago offered all three grades of gasoline ethanol free but now can only get premium.
In Minnesota next to the 10 percent ethanol handle, there is a warning that it should not be used in outboard motors, small engines and classic cars. I have checked my mileage using 10 percent ethanol and I get any where from 9 to 16 percent less mpg than I do using ethanol-free gasoline.
North Dakota has four ethanol plants and Minnesota has 20. I don't know of an ethanol plant in Montana, although I am sure some of the corn grown here is used for it.
I think 10 percent ethanol fuel should be available for those who want to use it, but for those who have older cars, lawn mowers and other small engines shouldn't be forced to buy premium to get ethanol-free gasoline.