550500Cooling System Service Tool – Airlift II Features and Benefits: An inexpensive solution to today s complex problem of trapped air in vehicle cooling systems. Eliminates airlocks Refills entire cooling system in seconds including the Heater Core No more system bleeding Operated with shop air Checks for leaks while under vacuum Easy to operate Push Button Valve eliminates the need to change hoses Works on all cooling systems with Fits-All” Cone Adapter “