To All:
Ok, for everyone sorry about the title but it's the truth. Just how many of you have checked the two screws on your gas cap? Yesterday I'm getting low and need to refuel so I drive to a local station. It was HELL getting the cap off. I had previous problem a few days before that at a different station, but now it wasn't coming off. After awhile of fighting it comes off. I discovered that one screw was gone and the other was VERY loose.
If you don't have both screws tight you're running the risk of what happened to me. I think I lost one in my tank, but my magnet wasn't able to get it. I'm not going to lose sleep over it, I found a replacement in my spare metric screw box (M4).
So, don't laugh at me about this but take a look at your cap. Make sure there's no movement when you turn the key other than the locking tabs moving. If any movement, check the tightness of the two screws.