I've been doing the following lately with good results for light surface rust on chrome.
1. Clean the part well.
2. Make a paste with Barkeeper's Friend (contains OA) and slather it on the rusty areas. Do not scrub.
3. Let that sit for a little while, maybe 15 minutes. Rinse it off.
4. Rub the areas with tin foil and a little wd-40 or other similar oil.
Last edited by lostarchitect; 08-10-11 at 11:59 AM.