Charles Talleyrand wrote:

How likely is this to happen in real life?

Pretty likely. Happened quite a lot in automobiles when gasahol was first
introduced.

I notice in a thread with 22 articles,
there are a bunch describing how to test for alcohol, a few about
what the FAA/insurance company/mechanic would think, but no
one actually seems to know the real world effects.

In one of those threads, Dennis O'Connor posted a link to an EAA article on
mogas use. That article contains a lengthy section on the problems.

One might think that every day someone, somewhere put alcohol into their
plane. Yet you never ever hear of an accident because of this.

I have, usually fuel pump problems.

Or am I missing something?

I expect so.

George Patterson
A diplomat is a person who can tell you to go to hell in such a way that
you look forward to the trip.