Where I live most counties require corn in the auto gas. This has been
a major problem for many engines. The small engine repair shops are
super busy cleaning the gum out of engines and replacing carbs. The
FAA put out a directive stating that low compression engines
previously certified to run on auto gas cannot run anything that
contains ethenol. The recommendations for engines now is that you...
1) Never run gas more than 2 weeks old (buy your mower gas before you
mow)
2) Never shut down an engine with fuel in it, cut off the fuel supply
and let it run through. All mowers, edgers, etc sold in the area no
include a fuel cut-off.

I'm wondering how this affects boats. Do you drain your fuel after
each run? Is there a way to cut oft the fuel supply to work the gas
out of the system before it eats up the seals?

-robert