Composition for cleaning the oil system of gasoline and diesel engines in used cars with mileage over 150,000 km from complex deposits. The increased content of anti-wear additives ensures effective and safe engine flushing for worn engines. • Effectively and safely removes oil and engine wear decomposition products • Provides continued action of anti-wear additives after oil change • Increases the service life of new oil by 10-20% by reducing the non-drainable residue by more than 2 times • Promotes cleaning of stuck hydraulic lifters • Does not clog the oil pickup and channels of the oil system • The composition is safe for seals, gaskets, and the paintwork of the oil pan • Compatible with all types of motor oils • Recommended for systematic use during every maintenance check-up