i tried all sorts of oils and grease.
oil:
- leaks out especially if the gun isn't used for a while.
- takes the fouling through the entire gun.
- gets on my hands, trigger, clothes.
- when it leaks out, the gun is bone dry and has no lubrication
- it can gum up over time and cause problems.
grease:
- stays where i put it
- can be a problem on tight guns in the cold
- traps the fouling, so have to clean after x rounds
now i just use a dry moly spray, spray on, let it dry for a few minutes, assemble the gun.
- doesnt trap fouling.
- doesnt take the fouling everywhere.
- doesnt leak out.
- no temperature problems.
- doesn't wipe off when cleaning, with or without cleaning products.
- i can use a solvent to flush out fouling from trigger mechanism without having to disassemble the entire mechanism for relubing.
for a while i used to remove the moly to check the metal underneath for corrosion, never saw any.
and i only put it where it has to be, so no problems with stains or whatever.
the reason some guns have a lot of wear is not the "wrong" oil or grease, it's because of the lazy owner.
if you dont replace oil that leaked out, the gun wil wear.
if you dont replace grease that is mixed with carbon fouling, the gun will wear.
so whatever you use, make sure it is there and the gun is clean.
if you have a super tight custom gun, don't use grease, the slide will push it out when you assemble it.
if you have a super loose gun, dont use oil, it'll leak right out.
p.s. one thing that really doesnt work: dry ptfe spray. it wipes right off and provides no lubrication whatsoever. also has to much resistance because of its waxy properties.
for corrosion protection on the outside of blued guns i use renaissance wax.