On Aug 3, 8:49*pm, Wayne.B wrote:
On Mon, 03 Aug 2009 14:54:09 -0700, JR North

wrote:
I really don't understand the deal with E10. Postulate, postulate. I
have no problems with leaving E10 in the boat tank over the winter, no
Stabil. Engine runs fine next year. Same with my generator and log
splitter. Perhaps it is SOME formulations or additive packages that
promote phase separation more/less than others. I use 76 almost
exclusively (station is handy). I fill the boat this year with multiple
5 gal trips to the station; didn't use dock fuel. Unless I'm going to
the San Juans, I usually fill the boat on the trailer at a land station,
coming and going.
JR

If you are going to the San Juan Islands that means you are in a cool
climate. * I think that makes a difference. * Here in SWFL things seem
to gum up much more quickly and that has accelerated a lot as E10 has
proliferated. * I've had problems with two different outboards, and a
generator, all in the last 18 months or so. * Prior to that, the last
gummed up carb that I had to deal with was in 1968.

I am also skeptical of the problems with E10 but replacing the filters
and de-gumming the carbs does seem to have worked but I admit I may
have solved the problem without really knowing what it was. OTOH,
humidity here in Tallahassee is pretty extreme.