I had a slight leak at the radiator neck which dripped down the inlet neck and would like to know if there's a way I can get rid of the stain without damage to the nice Ford Green which the rebuilder put during the rebuild. Thanks for your help. Indy A
I would try a little Bar Keeper's Friend, available in hardware and grocery stores. Make a paste and rub it on the stain. Let it sit for a few minutes then rinse it off with water. I have used this to remove rust stains on a variety of surfaces.