Ok so apparently the 99-2003 mustangs all have this issue and according to ford it should have been recalled but since no one died.. they didnt. The filler neck is known to rust (I bought this car from MD) and the grommit that holds in the filler neck to the tank tears. Well mine is tore completely in half and my filler neck has some surface rust.. 3 hours of labor for them to drop the damn tank and replace the grommit.. I went through a 1/4 of a tank in 20 miles today.. does that tell you something?? Lmao