a/c sealing washers
96 caddy. bad compressor. system held charge fine. changed out compressor. system works fine but i have a leak. only thing i touched was compressor and metal/rubber sealing washers on backside of compressor. not a fun job to change them out. could it be a leaky compressor? yes, they can leak from body and shaft seal as well as sealing washers. change washers and see if it holds charge. if not than change compressor? it was used.