Re: Maybe a super dumb question.

Posted by Nat on October 07, 2005 at 05:01:31 from (24.93.8.168):

In Reply to: Maybe a super dumb question. posted by W4 on October 06, 2005 at 20:41:21:

Well, a piece of plastic with a strong rubber band would simply pop off the fuel filler neck. It's tapered, and very short, so there's very little for the plastic and rubber band to grip.

Even if you could get the plastic to stay, gas expands and contracts tremendously with changes in air temperature. If you seal the tank when it's 60 degrees out, then it gets to be 20 below, that plastic will get sucked into the tank. Then if you could solve that problem, you have the possibility of pressure buildup in the tank, so the next time you open it, BLAMMO!, fuel vapor sprayed everywhere, and a possible fire.

The best thing to do is fill the tank with gas to minimize the amount of air in the tank, add the appropriate amount of StaBil to stabilize the gas, put the regular cap on, shut off the fuel valve, and simply leave it. It may not be cost effective to fill the tank, so if you can live with a little surface rust in the tank...

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