what part of the country are you in?
is rust a problem with your car? have you looked at your filler cap gasket?
look in the trunk, there is a rubber hose that connects to your filler neck that can leak fuel into the trunk, and it'll leak onto the pavement on the passenger's side back tire area.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!