TBob,
I have some insight on the tetra lube if I can offer my advice.
Tetra is a lubricant, but not in the traditional manner, I apply it liberally then coninue to wipe the surface with my tetra rag like a polish. After a few miunutes the tetra grease/oil will seem to have disappeared, it has not been wiped off or worn out it has bonded to the surface (not very deeply), I reapply and polish again, the surface color of the metal will change slightly, now the surface is lubricated and protected. This process works exceptionally well on gun barrels. I have noticed increased accuracy and velocity. (10 -15 fps). When I am in the jungle the combination of tetra and sentry clothes has kept my pistols functional.