Brake cleaner, or brake parts cleaner, is an aerosol spray originally formulated to clean tough grime and brake fluid off of brake parts, discs, and drums. Some mechanics also use it to clean other metal surfaces, such as oil pans and chassis components.
How to Clean Brake Parts
Brake parts cleaner helps brake components work more smoothly; dirty parts are more likely to jam up and can wear out faster. Many new brake rotors come with a rust-proof wax-like coating that is designed to be removed with brake parts cleaner or a grease-removing cleaning solution.