1996 Ford Windstar Owner's Manual - Page 320
1996 Ford Windstar Manual
Page 320 highlights
Engine coolant recovery reservoir fill location Use Ford Premium Cooling System Fluid or an equivalent engine coolant that meets Ford Specification ESE-M97B44-A. Do not use alcohol or methanol antifreeze and do not use engine coolant mixed with alcohol or methanol antifreeze. If you do not use the proper coolant, the aluminum radiator on your vehicle will corrode. Whenever you remove the radiator cap, make sure that you also check the condition of the radiator cap rubber seals. Make sure they are clean and free of any dirt. Rinse off with water, if necessary. When you replace the radiator cap, make sure the radiator filler neck seats are clean. Also check that the overflow hose is not kinked or turned in such a way that prevents an easy flow. 320