Rust-Oleum Engine Enamel Automotive Spray is a must have product for anyone who ends up heating their automotive engines beyond a certain limit. It's is a brilliant little product that comes in a handy can that can be used to create a smooth finish on automotive engines and other surfaces that are usually prone to excessive heat resulting in unwanted corrosion. The angel spray is a boon for people who often take long journeys in their vehicle. Using the spray intermittently makes sure that the engine last longer.