Add me to the list. The identical problem. Everyone kept telling me it was a poOrly seated gas cap. Anyhow...my car was covered by a used car warranty. It is 2001 T5 V70 5 speed. It took Performance Motoring in Hadley Mass a couple of weeks to get it done...starting with something they called "J tubes", and finally doing what the dealer had estimated as a $410 filler tube replacement.

I had suggested epoxy or silicone...but they didn't want to try. I had this done under the warranty at Performance Motoring, but it took some major whining. They claimed that they had $800 in the repair.

Other lesson learned...even if you communicate with the warranty provider within the mileage of the warranty and they pledge to fix it....don't go beyond the miles before dropping the car off for repair.