I think there are probably ways around it - perhaps you could run it

until it was pretty low, disconnect the fuel line at the rear and

run the pump(through a line into a gas can) until the tank was dry,

then pressurize the line going to the front of the car with a little

less air pressure than the regulator is set for (so you don't blow it

back into the tank), disconnect the electricity to the in-tank pump,

start the engine and let the air push the last of the fuel through

the injectors.

That should be relatively harmless.

BTW ALL gasolines have a finite gum content. It is measured both as

present before aging and after aging. The formation of the gum

is a polymerization reaction, like making rubber, nylon, polyethylene

or even solidification of epoxy. It is normally catalyzed by oxygen

but can also be by ultraviolet or visible light.