It also includes a corrosion inhibitor which extends the life of components such as the radiator, heater matrix, metal water pipework and metallic components of the water pump. (mechanics.stackexchange.com)
Most of the time, an engine knocking issue is caused by low oil pressure or low oil levels causing metallic components to hit each other without proper lubrication. (yourmechanic.com)
Prof. Bhaduri, the Director of Multi-functional materials laboratory at University of Toledo says that they have been using microwave for years to simplify fabrication of complex metallic components. (sciencedaily.com)