An ideal choice of oil-based primer to use under BPS Agri Systems heavy-duty industrial maintenance tractor and implement enamels (refer to model No. 18-4432-01 series). Rusty metal should be sanded and spot primed with rusty metal primer. Rusted galvanized should be primed with zinc dust primer (refer to model No. 27-4296). Apply with brush or roller. Thin to ratio 8 fl. oz. VM&P naphtha to 1 gallon primer for spray application. Covers approximately 500 sq. ft. per gallon, 125 sq. ft. per quart on smooth surfaces. Dries to the touch in 4 to 6 hours. Clean up tools and spatters with mineral spirits. Refer to model No. 4432-23 for red metal oxide quart. Red oxide spray covers approximately 75 sq. ft. per 12 oz. can.