John and Jim. Your vent tubes are metal (originally). My guess is John's gastank has developed a pinhole leak and the leaking gas is dissolving the undercoating on the tank as it leaks out. The "hardened mass" is resolidified undercoating. -----Original Message----- From: John Bayerlein <[email protected]> To: [email protected] <[email protected]> Date: Wednesday, December 01, 1999 10:26 AM Subject: [FWDLK] 1958 Plymouth Fuel Tank Vent Tube Dear Fellow FWDLKR''s I notice this morning a small black hardened mass in the garage floor. Looking underneath my Belvedere, I can see black staining on the fuel tank driver's side. I suspect that my vent tube melted after adding Sta-bil fuel stabilizer for the Winter. Sound plausible? Any other ideas and how do I repair it, if at all? Thank you. Mary Beth Bayerlein |