....Here's an unconventional suggestion among many good ones you've already gotten. How would you like to forget the need to lubricate? If your gun has all steel internals you can simply have them hard chromed by Armaloy and there will be no need for lubrication in the future, just an occasional spay cleaning with Gunk Out ,or similar cleaning solvent. If your reciever is Aluminum, a quality spray dry lubricant fills the bill. Today's dry lubes are better than ever having profited from improved carrier formulations.

....The 'problem with oils is a more rapid build up of carbon residue which accelerates metal wear.

......I went to hard chrome throughout on my hunting rifles back in 1978 when Armaloy out of Texas developed superior chrome plating for gun parts. No smelly oils when deer hunting is another benefit as well, no rust ever, and the lowest coefficient of friction, metal to metal, known. Plus wear or marring of metal surfaces is as near non existent as is possible today.