NewPosition 4CFM 1 3HP Air Vacuum Pump HVAC A C Refrigeration Tool Kit AC with reviewEasy To Maintain Oil drain plug located at bottom of oil reservoir. Newposition 4cfm 1/3hp air vacuum pump hvac a/c refrigeration tool kit ac, auto new position powerful hvac refrigeration kit, 4cfm? Checking the oil sight glass will help to ensure the proper level of oil. This item can be shipped to United States.