I guess I didn't pay attention to how many gallons it took that day or any other time. I just always let it shut off when it's done and go on my way. I had one person suggest something about the overflow tube and that that smell should've gone away within a few days. It didn't. Drove the whole tank for two weeks with the smell still strong. Now I'm two weeks and one more tank in and it's still bad. :-(
(I am nutty about my car, and clean it daily, so there is no residue or spillage anywhere.)