WARNING: Some paste waxes are water based and will instantly rust exposed cast iron, make sure it's petroleum based. I made that mistake once. Or just avoid waxes altogether as they can contaminate parts resulting in the dreaded fisheye when finishing.
I have also given up on Boeshield. Once a favorite of mine it failed me a number of times resulting in machines rusting so I'm done with it. It works great until it doesn't. Just seems to evaporate or break down and bam rust. Now I'm treating with STA-BIL Rust Stopper.