Re: stuck petrol cap help urgently!!
have you tried spraying some lube ( silicon spray, wd40, crc ,etc ) in the key hole.
maybe the key/lock is jamming and not releasing the catch properly.
`75 XB FAIRMONT SEDAN injected 351, toplaoder, disc brake 9", factory paint+ vinyl roof.
`03 BA XLS ute - lpg, auto, lsd, acid rush paint,