I bought the Nano Oil "micro oilers" from Howe's Knife shop. For kicks, I bought all three varieties - 5w, 10w, and 85w. I use it on anything and everything that might need loosening up and or to stop squeaking. It seems to last for a long time also. The 5w and 10w (maybe start with the 10W?) seems to work well for knives and guns. It is supposed to help protect metal surfaces also. Seems to be working well on my M1 Garand. One place it should not go is on the end of the integral locks. I put a small drop on an integral lock that was sticking somewhat and it became much, much worse. I don't have a lot of long term heavy use experience that I can pass on but I think you'll be happy with how it performs. Knives that I've used it on continue to open smoothly. None of the door hinges in my house squeak anymore. Of course, other oils may accomplish the same things but Nano Oil seems to be right up there with the tops. You can find quite a bit of information on Howe's site but also on the Nano Oil site. Hope this helps a little bit. Mike
Try looking around on Blade Forums for Nano Oil threads. I think I've seen a couple. I think there is a decent thread on the Spyderco website forum also.