1997 Ford Explorer Severe Duty Supplement 1st Printing - Page 12

Maintenance recommendations COOLING SYSTEM MAINTENANCE Engine coolant Check the coolant level in the coolant recovery reservoir daily. It is not necessary to remove the raditator cap to check the engine coolant level daily. Never remove the coolant recovery cap while the engine is running or hot. If coolant must be added more than once per month or if more than one liter (or one quart) at a time is needed, check the cooling system for leaks and correct as necessary. Check the freezing protection rating of the coolant at least once per year. When adding engine coolant, use equal parts of water and Ford Premium Cooling System Fluid or an equivalent that meets Ford specification ESE-M97B44-A. Do not use alcohol or methanol antifreeze or an engine coolant that has been mixed with alcohol or methanol antifreeze. For instructions on engine coolant maintenance, refer to Checking and adding engine coolant in the Maintenance and care chapter of the "Owner Guide". Refer to the Severe duty maintenance schedule of the "Service Guide" for information on proper maintenance intervals. 12 RADIAT OR COOLA NT ONLY