I beg your pardon. I live in Montana and run 85-15 gas-ethanol in my Chevy truck year round. It purrs like a kitten and starts with ease in sub-zero temperatures.
How are things in Montana, and when are you ever getting rid of that noxious senior senator of yours?
The cars were hard to start on cold mornings because ethanol burns at a higher temperature than gasoline. Creating a fuel with 10% ethanol makes little difference to a car's performance, but anything above that, researchers have found, can cause problems. The mixture can corrode metal engine parts because of its high water content, for example.