What is the best Japanese Black Metal band?
Primer is used as base paint, if you want it to last, you will have to paint metal with oil base paint after you prime metal. Recommend to use same brand primer as well as oil base paint, so after one prime coat, paint with two coats of oil base paint. Oil base paint will definitely last longest.
Benjamin Moore has a great paint called DTM (Direct To Metal) no primer needed. Check it out
on metal always wash the metal with white vinager then use a oil slow dry metal primer from dunn edwards paints try going to there web site good luck
I've had good luck with Rustoleum.