It seems like I remember reading about some folks applying wax to their blued guns. I like to handle my blued pistols often, but don't like wiping them down with a light coat of oil frequently. When I do wipe them down, the light oil coat usually gets on my hands since I don't usually wipe the gun down before I handle it. Can a coat of (automotive?) wax create a reasonably durable rust barrier on a blued gun? Anything else?
Use Johnson's paste wax. It is also good for unvarnished wood stocks and grips. Apply with bare hands, let dry for a bit, wipe with soft cloth.
Try this stuff, kind of difficult to apply but works really well when on. http://www.bluewonder.us/BlueWonderArmadillo.html
Automotive car wax. Your car left outside, takes more abuse than your gun ever will. Or you can go with Renaissance Wax, which was developed to protect museum pieces.
I'm a detailer, wax would work quite well but it's not heat stable. Carnuaba wax is organic afterall and will degrade overtime, if I had to use a car product I'd find a good sealant for car paint like Klasse Sealant Glaze. I use it on all my professional details and around the house (it seals everything). Last a long long time and doesn't leave residue.
I have used Johnsons Paste Floor Wax on blued guns, ground machine worktables, and other stuff like that for about 40 years. It is widely used in the paper, printing, and wood industrys for rust protecting without oil staining the products. It works like a charm. But, it doesn't last forever. Best to apply every two weeks or so at least for belt-carry guns. More often for CCW guns that are subject to salt & sweat everyday. rcmodel
A can of that stuff will last for 20 years and it is available most anywhere for about $5. I have a couple of older rifles (+40 years). I use paste wax instead of linseed oil. Gives them a nice smooth, natural feel.
I`ve heard lots of good about this stuff, both in print and from a buddy that swears by it. I haven`t used it yet as I`ve a can of Birchwood Casey gunwax that has been working well for me and I`m not experimenting until it`s gone. http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=857663&t=11082005
In another related thread someone mentioned Renaissance wax, used by museums all over the world. I bought some but haven't tried it yet. Pretty expensive stuff. Cheap compared to rust spots on my Luger.
Don't use Renaissance wax or car wax, both are abrasive and will take the bluing off of your guns in short time.