I am like Tomcoe. I have been out of the loop professionally for a few years. I know when I was working in a body shop one of the painters had a problem painting a car that someone had done their own primer job on. They used a spray can primer and it was incompatable with the type of finish.I think the primer was lacquer & the paint was enamel.I guess just make sure the primer base is compatable with the finish paint.