stuff that makes gas last longer

[Brett Dikeman]

On Mon, Apr 6, 2009 at 9:33 PM, Huw Powell <audi at humanspeakers.com> wrote:
> Brett Dikeman wrote:
>> Another vehicle storage tip: fill the tank to full if it is a metal
>> tank.  The less air in the tank, the less moisture that gets drawn in
>> and out with pressure/temperature changes.  Fuels these days have a
>> large amount of ethanol, which is hygroscopic.
>
> Does that make them less likely to need drygas?

Yup, since 10%+ of the fuel is ethanol, which is what drygas is.  I
wonder how much water the ethanol in E10 fuel absorbs before it even
gets into your tank...hmm.

>  A non-hygroscopic fuel
> would seem to be more of a problem, not less?

If you mean that gas pre-lets-give-the-midwest-another-subsidy has
more of a problem with water freezing in the tank and such, yup.  It's
about the only benefit- that and its replacing the massive contaminant
MTBE.

  The ethanol has been causing huge problems, especially in
marinas...apparently it caused tank liners to degrade, or crap in the
tank to loosen and clog up filters/pumps/etc. It also causes
accelerated aging in fuel lines, seals, etc.

Brett