Retired Navy guy here. When we went on those 6 or more extended tours on a
ship, I put my car in storage. I learned the hard way, the gas don't keep
that long.
2 things happen. Water forms in the tank from hot/cold cycles from the
weather, and the gas breaks down at the chemical level.
The car may or may not start upon my arrival home from a 6 or more month
tour. If it did run, it ran roughly. Putting "dry gas" additive in the
tank helps before storing gasoline that long, but its not perfect still at
the end of the time period. Filling the tank reduces the air in the tank,
and any corresponding water intrusion as a result. Gas stations that don't
do much business should be avoided as these are most likely to have water in
their storage tanks. Gasoline will, after stored extensively, turn into a
very sloppy, very loose gelatenous mass that no internal combustion engine
should ever see, diluted in "good" gas or not.

Other than killing weeds on the fenceline, there's another garden use. If
your tomatoes/potato crop location has that contagion that requires at least
two years of non-growth to allow the contagion to run its course, then pour
the gas in the area. 2 years later, and alls good irregardless.

--
Lil' Dave
Beware the rule quoters, the corp mindset, the Borg
Else you will be absorbed
"FDR" wrote in message
.. .
I have a couple of gallons of old gasoline, probably at least a year old.
I
suppose I could dispose of it properly, but I was wondering of it could be
"revived" somehow or used instead?