1996 Ford Explorer Owner's Manual - Page 357

Servicing Your Explorer 5. Finally, check the radiator and add more engine coolant if needed, following the procedures noted above. Reinstall the radiator cap securely, when finished. 6. If more engine coolant is necessary, fill the overflow reservoir to the appropriate level marked on the bottle. NOTE: Due to air being trapped in the 4.0L engine cooling system, it is not unusual to experience a 4 to 7 ounce (120 to 210 ml) coolant loss up to 7,500 miles (12,000 km) after initial system fill. In order to bleed the cooling system properly after initial fill with coolant, it might need up to five cycles of: s heating up the system (thermostat open) s making sure coolant is at least up to the cold fill mark of overflow bottle s letting the coolant cool down (engine coolant temperature gauge below the N of NORMAL) s topping off the coolant overflow bottle to the cold fill mark If coolant loss continues after 7,500 miles (12,000 km), consult your Ford Dealer. 357