Rust Protection for Cast Iron

Can anyone recommend a system or product they use for protecting cast iron surfaces? Specifically I have a bandsaw table and some hand planes that seem to struggle with the humidity in Perth these days. I've seen some recommendations for products that are hard to find in Australia, I wondered if maybe a local might be able to recommend me something.

Thanks in advance!

OOPS nevermind, seems there are like 8,000 posts on this exact topic. Will try some Paste Wax once Carbatec opens again.