I had a small scratch on my top radiator tank from when they formed it. I used some fine flower then some fine corn starch. It took a long time to get the scratch out but it was a small area on the tank and worth the effort. I never would of thought it would do it but a old guy used that trick to clean up Aluminum. I forgot to mention this was done using a dry paper towel
62 blue

Last edited by Don; 03/11/2018 8:00 AM. Reason: added to post