[Myrddin]

I buy strictly ethanol free fuel in southeast Idaho. The hygroscopic nature of ethanol draws water into the fuel. That water freezes into ice in the winter damaging fuel components (lines, pumps, filters). The ethanol is corrosive as well. In small engines, ethanol burns hotter causing damage to the valves. It has no place in a gasoline engine.

[Scrambler Bob]

Yep, and ethanol eats up my Quadrajet Pontiac carburator.

[Does so]

Ethanol burns cooler:

https://www1.eere.energy.gov/vehiclesandfuels/pdfs/basics/jtb_ethanol.pdf