Review on Stant 10504Y Flex Fuel Locking by Sam Duppa

Has worked great on 3 separate occasions when filling up the truck. And the other day, in the cold rain, with less than a quarter of gas in the tank, I couldn't take it off. I drive back to the office because I didn't say it in the truck, I told my buddy and he tells me this happens to him all the time in his truck. And that he's still using it! He goes to my truck, leaves the key in there against the instructions and unscrews the whole cover. I put the original OEM connector back in. Please note that the door had a cover instead of a lock. But hey, the check engine light never came on while I was using it!