BlueDevil Head Gasket Sealer is a permanent solution for head gasket leaks, warped or cracked heads, and freeze plugs. The sealer contains no solid or particulate matter and will not clog your engine. It can be used in petrol and diesel engines as well as in electric vehicles. Not only does it prevent leaks but also helps to reduce fuel consumption. BlueDevil has been approved by the National Highway Traffic Safety Administration (NHS) for use in emergency situations.