I have a 93 oldsmobile cutlass supreme and I just can't seem to find out where i am having the gas leak at. it seem as though it is occuring on the top of the tank but not sure. having a little bit of difficulty figuring out how to drop the tank. anyone that has useful information on how to do so or where on the tank i should check for the leak at before having to drop it please respond. i never had a problem with it when there was a half tank but since i filled it to 3/4 of a tank it started leaking. it only does it when the car is sitting on a slope as well. doesn't do it when it is on flat ground. thanks

if youre going to get into that, i would strongly recommend a repair manual...