On Mar 20, 5:53*pm, Frank frankdotlogullo@comcastperiodnet wrote:

snip

Oxidation is the problem. *The stabilizers are antioxidants and
obviously removing air from the tank is a good idea. Heat and light
would also accelerate. *Gas stored in an inert sealed, preferably
metallic *system should last forever.

Don't bet on it. Some metals can catalyze the formation of cyclic
pinenes in fuel. Most old car owners are familiar with the dreaded
odor of 'Pine-Sol' in the fuel when their car is taken out of long
term storage. And jet fuel has always had a problem with bacterial
growth in storage tanks. As they say at the Subway Sandwich shop or
wherever, 'It pays to eat fresh'.

Joe