Hi, I am the 2nd owner of a original 67 I got from the original owner 15 years ago. The AC system cas a small leak and I want to try to fix the problem with R-12 Super Seal Stop Leak. I read about it and it is designed to not only repair your basic leaks, as in o-rings, gaskets and hoses, but will also seal leaks in METAL! It will repair the metal in your Evaporator, Condenser, Compressor, Accumuby peabody67gto - Pontiac GTO Forum