I called the guy at Fuchs Petrolube again, to understand this a little better.
I find it relatively complicated to put it in words.
Ordinary oil for gasoline will not mix with methanol, and ordinary oil for methanol will not mix with gasoline. You cannot use both types of oil at the same time, because lubrication will break down if the two types of oil come together. If you had one fuel tank with pure gasoline, and one with methanol without gasoline, you would need to use Fuchs Aerosafe in both tanks because this oil is suitable for both types of fuel. But Aerosafe does not protect the engine against rust and you would need to flush the engine afterwards so I say this would be a can of worms.
However, a blend of gasoline and methanol can mix with normal two stroke oil, as can be checked in a clear glass jar. That should be no problem as long as it is nicely mixed and no parts of the fuel are pure alcohol, says Fuchs Petrolube. Hence no problems with gasoline two stroke fuel containing ethanol.
Unfortunalely, water cannot be added to gasohol, not even with the addition of acetone. The gasoline separates and swims on top. I checked this out last winter making cheap windshield washer fluid from E85
Gasoline, alcohol and nitromethane could be blended.
