Protects valve seats when running on unleaded petrol. Improves start and full-load performance. Dissolves and disperses deposits and residues in petrol system. Provides smoother idling. Removes deposits on valves and in the combustion chamber and avoids re-contamination. Increases the octane number up to 8 points. Improved engine performance and operational reliability. Protects valve seat from excessive wear. Ensures stable combustion process and an improved CO-value.