Its not leaking that I know of. I bought this truck that already been restored but the guy I bought from had passed away in 2007 so the truck just sat in a airplane hanger and hasnt been run since then. I think that it just rusted and froze up? I have removed it but I cant even remove the 2 screws from the backside to get inside it to see if maybe I can free it up and clean to reuse.