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Yeah, you gotta use well oil. Well, it comes from the wells. Well, they don't kill the wells anymore, but that used to be the best oil because it's low in, uh, what the heck is it, sulfur. It doesn't heat the gears up because of the brass gears and the movement inside. If you put the wrong oil in it, it can actually grow it. Little things I've learned along the way, the only mechanical watch is...