Ok so my swiss army knife is getting a little sticky at the joints and I've never oiled it or whatever your supposed to do with folding knives. So what would be a good oil to use for lubrication on a swiss army knife, if that's actually what your supposed to use at all. Also, how do you apply it? Oh and I also want to get some oil for my fixed blade which is the kellam wolverine so it's carbon steel and how would I apply that, and if anyone happens to own a kellam knife like the wolverine, does the handle need oiling or anything too? I'd like the oils to be foodsafe but I'm a little concerned about oils that go rancid as that doesn't sound very food friendly either... Any help would be great, thanks.