Composition for solving primary problems of cylinder-piston group coking. The classic formula effectively and safely cleans pistons, compression and oil control rings from carbon deposits. • Used at the first signs of coking • Decokes compression and oil control rings • Restores compression deviation from the norm by 15-20% • Recommended for oil consumption up to 100 ml and 500 ml per 1000 km for atmospheric and turbocharged engines, respectively • Reduces oil and fuel consumption • Exposure time from 1 to 12 hours • The package is designed for engines up to 2.0 L in volume • Does not require removal of the oil pan • The procedure must be performed with mandatory oil change.