As many of you know our wheel hubs rust like crazy. Although perfectly normal and harmless it still bugs me looking at it every time I change my wheels each winter/summer season. I got my car back in July 2010 and first noticed rust when I changed to aftermarket HRE's only a few months later. It could only get worse so I cleaned it up with a steel wool pad and did some research to prevent it rusting again and came up with this stuff:
I only used that copper anti-size stuff (first link) one time as I thought that was a bit overkill and only started using the Fluid Film spray after, spraying liberally on the hub each time I changed wheels for the season. I haven't cleaned the wheel hubs since 2010 and they still look perfect!