I have a 1992 940 Turbo sedan that I bought used in 1998. It has about 140k mi. on it I think, but I am not sure because the odometer/speedometer works intermittantly due to some sort of electrical issue.

When the fuel tank is more than half full or so, fuel leaks down the fore part of the tank, even though all the fittings seem to be aft. Once the fuel level is below about half, the leaking seems to stop. The leaking is slow enough so that the dripping is limited to a brown, smelly gas residue, as opposed to a large amount of obvious gasoline.

Logically, this would appear to indicate a hole or crack in the top portion of the fuel tank, but I have never had it off and don't know the architecture. The Chilton manual I have for this has no drawings or photos of the tank and fittings.

Are there any other leak scenario possibilities that could account for the observed behavior other than a fuel tank with a hole in it? Are there any fittins on the fore section of the tank anywhere?

If any of the experts out there could offer a suggestion, I would be much obliged! Thank you.