Not to mention that it's bad to have air in the tank.  Fuel and air
(oxidizer) should not be stored together.  The military calls this an
FAE (fuel air explosive).

-Karl

> The rational is that whatever moisture and air is present in the
> empty tank has only one way out, through your burner orifices. Bad
> performance for a long while. You may want to consider having the
> tank purged, if it is empty now.

Karl and Kristina Bloss, Trexlertown, PA
'87 GL Weekender  "Beverley"
Mechanic list: http://www.enter.net/~bloss/vw/vwshops
Busses by the Trail - Oct 15-17, 1999: http://www.enter.net/~bloss/vw/bbtt
PA/NJ Vanagon owner's mailing list: http://www.onelist.com/subscribe/pavanagon