I have a few blades I was looking to start restoring soon and was wondering if a soak in 3-in-1 oil would take off the minor surface rust. I plan on popping the pins and just setting the blades in a small ziplock with the oil in it. I know this works great for old tools and have even used it on an old injector that was stuck shut. Just curious if anyone has any insight as to whether this will do anything to the blade or stain the metal. Also there is no etching or gold wash or anything on the blades just a few old Torreys.