Victor® Out O'Sight Mole Trap - All Questions

I have an old set of out o'sight traps that were given to me. they were pretty rusty, but they still functioned. I wanted to get them to be like new again, so I took one and soaked in vinegar for 2 days. It worked well and down to bare metal. I dried it off and now have it in my oven at 350 to get it completely dry and moisture-free. My question is what should I do to avoid forming rust? I thought about a thin layer of unscented coconut oil. Hoping that it would not keep moles from approaching. Any advice? Thank you. These traps are great!