Cooling System Specifications: Draining

Remove radiator cap. Ensure heater coolant valve (if equipped) is open. Open drain cocks or remove plugs in radiator and engine block. Inspect drained coolant for signs of excessive rust or oily film. Oil contamination of coolant is an indication of defective engine gaskets, leaking automatic transmission (transaxle) cooling lines or engine oil cooler (if equipped). Clean radiator cooling fins as necessary to ensure proper air flow.