Ethanol?

To the Pure take the above and add a mechanism for starting on gasoline and switching to alc. (alcohol will not vaporize or combust well at 32 degrees, let alone below freezing). A manifold carb preheat stove system will also help keep it running in cold weather.
Remember, all the worlds best are trying to do this as we speak, and it is not happening.
E85 yes, pure not yet. JimN

Kerosene and/or "All-Fuel" tractors had a separate starting tank so the tractor could start up on gasoline. There were shutters on the radiator to help warm the tractor up on the less-energetic fuels. The carbs had bigger jets. There was a heat shroud on the exhaust manifold to help warm the carburetor.

Problem is, all these features are now tough to find because most were removed when refiners figured out how to make more money off the petroleum distillates, and kerosone fell out of favor as a main tractor fuel. If you could find an original All-Fuel H or M with all the gadgets, you could probably make it run on moonshine.