There is another danger of mixing ethanol and gasoline:

Consuming ethanol while operating a gasoline-powered equipment is a
deadly combination


frank1492 wrote:
I have a female friend who owns a boat and reported that her
service department told her what I would consider to be an
exaggerated tale about new gasoline /ethanol blends which can
cause an engine not to start or die while in service. She has a
outboard. I said I was not aware of any issues, and had seen nothing
major reported in the press. I said I had an I/O with a Chevy V6 and
would not be expecting any more difficulties than would be the
case with my car. She then asked if it could be just an issue
with outboards.
I haven't asked my marina guy about this yet. I did a little Net
research and couldn't find much except something about a possible
reaction with fiberglass fuel tanks.
Can someone clear the air on this issue? She seemed quite
concerned. (I'm not.)
Many thanks for your help!
Frank