High Heat PrimerRust Oleum High Heat Primer is the ideal product to achieve a smooth, rust resistant surface with maximum durability that stands up to intense temperatures up to 1093C. Its advanced ergonomic spray system allows effortless application at any angle, even upside down, so you can easily access hard to reach spaces. With this premium choice, your automotive engine and other surfaces will be protected for years to come. For best results Apply 2 or more