I like Ren wax and use it on many of my collectible guns. Applying is easy, start with a clean surface, wipe on and buff. I take a jar to most shows to give me something to do during slow times. 

Mike

David McNab said
While watching Gun Videos on YouTube, I ran across the use of Renaissance Wax on Firearms.

I have to admit that in 50 years of gun-handling it never occurred to me to put coat of wax on a gun, especially the blued steel.
 

It’s actually a very old method long used by museums & described in my 1959 NRA “Gun Collectors Handbook,” which recommended transparent shoe wax, among other products.  All those have been superseded by Ren Wax, though to what extent that’s a testament to the power of advertising, I can’t say, never having used it.  One reason I haven’t is uncertainty as to how residual oil in the pores of the steel (which couldn’t be removed without cleaning with a strong solvent) would effect adhesion of the wax–wax & oil seem as if they might possibly be chemically incompatible, but that’s pure specualtion. It’s probably not the concern I think it is, or there wouldn’t be so many satisfied users, like Mike.  My other reason is simply trepidation about changing from a method (use of high-tech petroleum products of one kind or another) that I have confidence in, to something new. 

Have you discovered C&Rsenal…& Mae?

I use Johnson old fashion paste wax, the red and yellow can. It looks amber in the can but spreads clear. I won’t put it on an oily surface, I just wipe the gun with a clean micro fiber rag and apply to metal and wood. Let it set 30 minutes and wipe off. It adds a shine to all surfaces bringing out the colors and protects against salty fingerprints, great for gun shows or normal handling. When someone handles the gun finger prints do not show. It will last months in the gun safe and can be removed easily with Scott’s Liquid Gold  on a rag. Don’t use the Scott’s with lemon, use the original. I do not use on guns in poor condition as the wax does seal the metal.

 Many people use Renaissance Wax and it works to. I started using the Johnson and am happy so I stay with it. I have had no sign of damage to blue, case, or wood. The gunmetal on Henry’s and 1866’s I do not wax, rub, or oil. I like to leave the patina breath, maybe not necessary but I don’t like shinny brass. T/R

rwsem said
  I’m weird and have used T-9 Boeshield for about 6-7 years now.

This product is a reincarnation of Anderol, developed in the late ’50s, but never really caught on. I bought a can of it when it was advertised in the Rifleman, but never made much use of it.  Both are waxes dissolved in a solvent.