Lubricates, cleans, and maintains metal mechanisms, locks, and stops squeaking in hinges. Penetrates, de-rusts & releases, rusted and stuck parts such as screws, nuts, bolts, and restores them to operation. Waterproofs and protects, from moisture and corrosion, all electrical circuits (panels, lamps, motors, ignition systems, and battery poles). Particularly effective for marine use. Cleans tar and grease stains from car paint