requirement
On 06/25/2010 10:15 PM, david miller wrote:
> He keeps his tank full, I don't, preferring to buy fresh fuel each time
> I fly.
It depends on where you live. In a dry climate you can do it this way,
in a wet climate like the Netherlands it is better to keep the tank
filled all the time:
Temperatures tend to vary a lot, with every change in temperature the
air in the tank expands or contracts, so the tank "breaths" a lot. With
every drop of temperature the tank sucks in some new air, and together
with the air you draw in a lot of moisture from the air. With repeated
temperature changes you get condensation on your tank walls, and if
there is ethanol in the fuel, you won't find any water in the drains
because the ethanol binds the water. Until it is saturated, and as the
saturation point is determined by altitude and temperature, it often
happens during flight that the water suddenly drops out.
Keeping the tank full at all times is a good guard against water
collection in the fuel.
Frans
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