Re: Condensation in fuel tank
- From: "Al Bundy" <MSfortune@xxxxxxxxxxx>
- Date: 31 Oct 2005 05:20:34 -0800
Old Wolf wrote:
> I have heard that you should keep your fuel tank as full as possible,
> to reduce the exposed surface on the interior of the tank, on which
> condensation (ie. water) can form.
>
> Is there any truth to this?
>
> Also, is it ever dangerous (other than the risk of spilling petrol
> in the process!) to fill up the tank completely, to just before where
> the cap goes? I'm referring to the tanks where this is physically
> possible, of course. In other words, is there ever any need for
> 'a bit of air in the system' ?
Filling to the level of the cap would be a bad idea for several
reasons. If it's that close to the top any expansion will force fuel
out the vents and be a hazzard. Even filling the tank beyond the
automatic shut-off or so can cause emission system quirks and problems
that may delay you from starting and can turn on indicator lights. Much
of the fuel sold today already has alcohol added as an oxygenate and
that will absorb some moisture. And running off the top half of the
tank makes your in-tank electric pump's job easier, but you don't have
to go crazy over filling.
.
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