T o d d P a t t i s t wrote:
Corky Scott wrote:

Thought there was some kind of easy test you could do by adding water
to a sample of your fuel.

There is. Water and gas don't mix. Water and alcohol do.

Run to trash, find empty clear bottle (typically a water
bottle), scratch mark at about 10% point near bottom, fill
with water to that point, add gas, shake, let settle, see if
the water level is higher. If it is, alcohol has moved from
the gas to the water.

Do not spin this aircraft. If the aircraft does enter a spin it will return to earth without further attention on the part of the aeronaut.

(first handbook issued with the Curtis-Wright flyer)

You got that backward, if the alcohol is present the water level will
drop, not rise.