The cylinder head gasket is located between the cylinder head and the engine block. Today it is mainly made of sheet steel. Its job is to keep the compression in the combustion chamber. The seal plays an important role because it also separates the combustion chamber, engine oil, and coolant. Due to the heat of combustion and pressure in the engine, it can get tired and burn out, which can cause coolant-oil mixing and pressure increase in the cooling system. It is advisable to deal with the problem in time, because untreated failure can lead to more serious damage, "cooking" the engine.