Just began pulling my tools out of storage after a year of
construction on our house for multiple additions (and new shop).
Began sanding the rust and corrosion off (contractors like to set
coffee cups on cast iron, etc.) but took a break to visit Woodcraft.
They recommended trying a new cleaner / protectorant called TopSaver
instead. I've tried many things, topcote, special wax, and the others,
with not much success to date.
With a little elbow grease (and I mean a little), all of the rust and
corrosion came off. The top looks like new!! Too early to tell how
well it protects going forward, but this worked soooo well, I just had
to pass it along.