OK, so I have a pretty decent collection of molds. Some are not replaceable, Some not often used. I have tried various methods of spraying with oil, spraying with an Alox based rust preventative, (which is hard to get off) I am thinking of submerging my molds in some type of oil in sealed jars. Does anyone else do this? If so what would be good to use that wouldn't be too obnoxious to clean off when I want to use? I will disassemble screws, sprue plates. Or should I just spray them with something again ? I've had a little problem with rusting