The Stovebolt Site Forums The Shop Area Paint and Body Shop Paint/coating recommendation for leaf springs, axles, diff

Unless you take the springs apart you will have "rust dust" seeping out between the springs. The good part is when that happens you can just clean it and spray some more paint on it to make it look good.

...I took my 52 apart and painted them and used the polyliners. No rust dust!
My 37 was only painted and seeped rust dust. I just cleaned it off and painted them as needed. Somehow it finally stopped??