You will have problems eventually. MP282 is a primer surfacer. meaning high build. It is NOT meant to go over bare steel and has zero corosion protection. You can keep going, but if you do not strip it back off it will rust from the inside out.

Follow the link to the PPG website and the tech sheet for that product.


http://www.ppg.com/refinishftpsite/d...e_Surfacer.pdf