Here in Canada the gas pumps at most stations will give you the percentage of ethanol in that particular grade. Of the 3 grades the regular has the highest percentage and Hi-Test (premium) the lowest. I noticed at Shell the Hi-Test has zero ethanol. When I got the C15TA from Holland I was a little concerned about the differences in the fuel. For the 10 to 15 cent per liter difference in cost I feel I am farther ahead with the Shell premium. The vehicle guzzles fuel but I never go that far at a time. Scientifically, who knows how much difference it will make, but psychologically I feel a lot better about protecting my baby.
Barry