1997 Nissan Pathfinder Owner's Manual - Page 169

SDI0409 SDI0410 SDI0419 1. Perform the following procedure to open the heater water cock. ¼ Turn the ignition key from "OFF" to "ON". ¼ Move the heater or air conditioner temperature control dial to the maximum hot position then turn the ignition key to "OFF". 2. Open the radiator drain plug and radiator cap. Open the drain plugs on the engine block. 3. Open the air release plug to drain the coolant. 4. Flush the cooling system by running fresh water through the radiator. 5. Close the radiator drain plug and engine block drain plugs securely. 6. See the "Technical information" section for cooling system capacity. Fill the radiator slowly with the proper mixture of coolant and water. Fill the reservoir tank slowly up to the "MAX" level. Then install the radiator cap and close the air release plug. 7. Start the engine and warm it up until it reaches normal operating temperature. Then race the engine 2 or 3 times under no load. Watch the coolant temperature gauge for signs of overheating. 8. Stop the engine. After it completely cools down, refill the radiator up to the filler opening. Fill the reservoir tank up the "MAX" level. 9. Check the radiator drain plug and engine block drain plugs for any sign of leakage. 7-6