Eliminate cross contamination of engine coolants. Flushes contaminated fluid from radiator, engine block, heater core; hoses. Adaptor kit allows easy & quick connection to cooling system through the upper radiator hose. No need to cut hoses. Increase profits by performing a more complete cooling system service in 20 minutes or less. Completely portable, operates on 12V DC power. Pressure checks cooling systems. OEM approved.