I'm agree with Coromo. I don't like paying 1000% mark-up on engine oil. I make my own lubes now with some variation for different weapons and enviroments.
My average lube is thick but liquid. Like Ketchup.
My favorite lately:
STP, ATF, Lucas Red&Tacky synth bearing grease. Mixed evenly.
STP, ATF, 15w40 is much thinner, but deosn't last as long.
I use Breakfree CLP to clean and protect and inside my barrels.