Don't give up yet! You can remove the cap & filler neck as an assembly.
Get into the trunk, unloosen the connector hose. Twist the cap/filler neck
a little to hopefully break the filler neck to hose bond. A small dull screw
driver can help in getting under the rubber to loosen it from the neck.
Once you have the cap/neck off you can spray the BACK SIDE of the
cap with rust penetrating. Just keep spraying it for a week or so.
it will loosen up. You will also discover the screws on the bottom the cap,
so you can disassemble it from the back side.
However after 15 years what ever is in the gas tank will be rancid. Yeck.
> Don't LOCK your gas cap then let it sit out in the weather for 15 years.
> Gary Russell
> 67 2000
> Arlington, TX