This is Valspar's Direct To Metal 2000 series tintable primer. It's the same stuff we used to paint Editor Glad's El Guapo El Camino in the Dec. '08 issue. We had good luck with it then, so I bought another gallon from Top Guns in Gardena, asking them to tint it as dark as possible. The mix ratio is 4:1:1 (primer, reducer, activator), and I sprayed two coats with our DeVilbiss Starting Line gun using a 1.8mm tip. You can topcoat over this primer after 30 minutes of cure time, but if it sits longer than 24 hours, you need to sand it prior to topcoating.