Normal engine paints are too thick for radiator use which will interfere with heat transfer and block airflow over the cooling fins. Also, standard paint tends to flake off metal radiator tanks. Radiator Black is specially formulated to solve these problems and is heat resistant to 300°F. Factory Look Finish Heat Dissipating Formula Quick Drying Heat Resistant To 300° F 8%-10% Gloss Level Durable Enamel formulation resists temperatures up to 300ºF, under hood chemicals and chips. One can cover 6 square feet (most radiators require 2 cans). Net wt. 12 oz.