Ethanol kills both power & milage , you need not quite 2x as much ethanol but at least 50% more , alcohol jets are int he 130 -150 range while the gas jets are 70-80s for example . The octane of alcohol is much higher though .
Av Gas still has lead , apparently is is ok to pollute if you are off the ground
Your engine will love av gas but generally it is illegal to buy it & best case you can fill Jerry cans , they will not pump it into a car , we always told them it was far a racecar / track use .
In Canada Mohawk / Husky fuels have a lot of ethanol in them , my truck would not run it the crap !
As someone posted it is a battle , you add ethanol at the same time you have to meet Cafe requirements for better fuel economy .
As for Petrocan , Why would you go there , Ever ??