Kieth, There are two products I would recommend.Nevr-Dull (Magic Wadding Polish) and Met-All Aluminum Polish. Both work well, and from the smell they seem to have some ingredients in common. The Nevr-Dull is a bit easier to use as there is nothing to clean up except a thin residue film. Met-All is a pink paste and requires a bit more effort in clean up but it also leaves a protective coat on the polished piece, so the polishing may last longer. Met-All is sold by Restoration Hardware. Nevr-Dull is usually available in smaller hardware stores or antique shops as it is popular among antique dealers as a cleaning agent. Hopes this helps.
Greg Thies
Vienna, VA