Originally Posted by AntnyL
Update: I spoke with a customer rep at LMC, they say it's an "EDP" coating, and intended to be left on, just clean it, scuff and shoot the finish coats onto it. To be safe, I'll test it with the lacquer thinner as suggested here first. If it lifts or otherwise comes off, I'll take it down to bare metal. If not, scuff and shoot.....I guess.
Yep, go ahead and scuff and shoot. The EDP is high in zinc and
protects the metal underneath from oxidizing/rusting.