Date: Thu, 27 Dec 2012 15:02:11 -0500
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: E15 fuel? Long term fuel storage!
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Gasoline contains many volatile compounds. That is what vaporizes and burns
to run out engines. When stored in non-pressurized containers the lighter
more volatile compounds will evaporate first and the final stuff that
remains after long term storage is probably best used for road tar. This has
nothing to do with alcohol content or not. The alcohol may absorb some more
water due to its nature. Anyone experienced with cars during the 60's and
70's knows how to rebuild (clean) carburetors. Gum, varnishes, and that
nasty white crystal stuff that would clog passages were all common even in
regular use vehicles. Carb kits for most vehicles were in stock at most auto
parts stores.
For our Vanagons the best way to prevent fuel system problems during long
term storage is to make sure the fuel vapor recovery system is working and
tight. Having the system maintain pressure will prevent the fuel rom
evaporating and letting moisture in. Storing with the tank full will also
reduce the air space reducing condensation from temperature changes. Once a
year draining off the fuel and adding fresh will keep things ready to run.
We are going to see more of these blended fuels being mandated. They are
seen as a means to reduce pollution and reduce our dependency on the foreign
oil. I am not in agreement as I see the disadvantages. Just is what it is.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Don Hanson
Sent: Thursday, December 27, 2012 10:12 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: E15 fuel?
You really don't want to leave gasoline with alcohol in any fuel system
for long, without at least treating it with some fuel preservative. I've
been using Stabil now, which seems to work OK, but I haven't any long term
storage experience with vehicles using it.
You would not believe how ethanol gas can coagulate into such a tenacious
gummy messy substance if it's just left in a tank and fuel system
without any 'help' I recently revived a couple of our dirtbikes which had
just been 'pushed aside' for about 6yrs. These had gas/ethanol fuel in
the tanks (a KTM and a DRZ) and somehow, they were just 'out of sight, out
of mind) against a Ponderosa tree with covers. I knew I would be
rebuilding the fuel systems after that kind of dumb neglect but I was not
prepared for the substance I found in the tanks....It was like hard gel
that was almost unaffected by any solvent that I found... I had to throw
away the Suzuki gas tank it was so bad, and replace, not just clean and
rebuild, both the fuel valves. The carbs took multiple multiple
cleanings.
Now I am more careful with that crap. If I intend to store any motor
for longer than a few weeks I always at least put some Stabil in the fuel
and run it into the carbs or injectors before I shut off the motor. If I
can, I fill the tank with 'Non-Ethanol' gas, which is available in some
stations around the Northwest, and make sure to run that into the intake
system, again with some Stabil in the tanks, too.
I have a friend who's in the motorcycle suspension business. He uses
Stabil as a solvent for gummed-up motorcycle forks and shocks...I soaked
those two motorcycle carb parts in Stabil to remove some of the gummy mess
the ethanol left in there...It sort of works....better than MEK, Acetone, or
any other nasty solvent I tried at the beginning of my 3 full day ordeal
fixing my 'storage mistake' this spring...
I wonder if Corn ethanol is any different than Cane-juice like they use
in Brazil? Or sugar beets, which I am told is very much more effective as
a fuel source than corn....