I firmly believe "gun oil" comes from the same factories as every other oil.
As I've said elsewhere. I'm using High temp wheel bearing grease. $2.76 for a 1lb tub of it. Should last the rest of my life.
I just received my Bonus Pac Militec-1 order with free shipping. Darn that was fast shipping. I'll let you all know what I think about this stuff.
This is the best gun oil I have found.
Eezox premium synthetic lubricants from Warren Custom Outdoor Products