TEC 2000 Engine Flush is an innovative engine rinse for internal combustion engines. It effectively removes all contaminants found in piston ring grooves, oil gallery channels, and valve lifters. TEC 2000 Engine Flush eliminates deposits, carbon buildup, soot, and thoroughly cleans out used oil. One can is sufficient for 4-5 liters of oil in cars and 5-6 liters of oil in motorcycles.