How long can you leave it in...?, Before gas goes bad... Options

[sherman1]

OK, minds outta the gutter !

We're talking gasoline in the 914 tank - How long can a 1/4 -1/2 tank of gas sit in the tank, while the car is in storage, or under restoration (whatever) before it turns bad & begins to look like old varnish?

I know I can drain the gas out, into 5 gallon containers, but I wanted to avoid that if possible.

I figured about 4-5 months before it begins to go bad, but not sure.
How about using a gas-additive, or octane boost?
Any gas experts here? (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)


Thanks!

(IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif)

[Michael Oberg]

A few months ago I helped dig my parent's '79 Dodge Powerwagon out of its 9 year old spot next to their barn. I took out all the plugs, squirted some oil into each cylinder, installed a new battery, and cranked it over a few times. Replaced the plugs, and it started right up! Huge amount of white smoke from burning off the oil, but we let it run until it ran out of gas.

Not to say that letting gas sit for 9 years is recommended, but I was surprised that the fuel lines and carb weren't so gunked up with gelled fuel that it would render it inoperable. Granted, I haven't yet taken off the carb and actually inspected it (or the tank, for that matter).

Still, that doesn't exactly answer the question about how long a single tank should reasonably sit without a stabilizer. (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)