I recently picked up this pre model 17, K22 Masterpiece. It is in really nice shape. I cleaned it up today, and I think I was cleaning old grease that it was originally shipped with. It has matching numbers on the frame, barrel, cylinder, ejector, and grips. It has slight wear on the muzzle from holstering it, just the lightest turn ring around the cylinder, a chip on the bottom of the right grip, and a few scattered rust spots on the left side of the barrel. I'm thinking the rust came from storage in an old holster that came with it. My question is how to preserve this fine revolver, and other old guns which I am in possession of. A friend suggested "Old West Snake Oil". Are any of you familiar with this product? Are there better products out there? Thanks for any advice you could give me.