I have recently had several pocket knives handed down to me that belonged to my grandfather, my father, and my great uncle. Two are stainless (Sabre brand, made in Japan). They're both in pretty good shape. The others are steel, from Case, KaBar, Frontier, Old Timer, and one I can't read. These all have surface rust. What's the best way to preserve these long term? I'm not worried about collector value, I'm worried about preservation. Can I clean them up? Just coat them with RemOil? What's the best way to take care of these?

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