Evaporust works great on lightly rusted chrome. Much faster than vinegar, but still usually takes an overnight soak. Once chrome rusts, it won't be as rust resistant as it was originally, but liquid car wax does a good job of protecting it. I did come up with a way of restoring hard to replace parts that have that gray finish. I'm not sure what to call this finish. Bonderizing, galvanizing, parkerizing...something like that. If you soak these, they will turn rust red again quickly. With these parts, like this 1950s guide wheel, I don't soak in Evaporust. I leave the rust in place. In this photo, I'm burnishing in a dry lubricant called Action Magic with a match stick. I gave this wheel 2 coats. It closely resembles the original finish and holds up very well. The second photo is almost a year later and it shows no sign of red rust on the surface.