Internal combustion engines have inlet valves and outlet valves that play an increasingly important role. The valves, however, have to deal with all forms of pollution as a result of, for example, EGR and contaminated fuel. The contamination remains on the valve as a deposit, as a result of which the combustion chambers no longer close properly. This affects the performance of the engine and fuel consumption will increase considerably. JLM Valve Saver Fluid efficiently protects and cleans valves and valve seatings and optimises performance.