stchman
Member
Technically, Hoppe's #9 is a powder solvent, not a lube.
I happen to use Tetra as a lube--it's a formulation of teflon in a suspension. I like it a just a tad better than CLP. I have late uncle who used nothing but 3-in-1, but I find the viscosity a tad too high for my taste.
As to frequency, really, "as needed" probably says it best. If I find something that feels sticky or not slick enough, it gets lubed.
Hoppe's makes lubricating oil.
http://www.hoppes.com/gun-oils/lubricating-oil