1997 Ford Expedition Owner's Manual - Page 164

Maintenance and care Washer fluid in the liftgate reservoir Washer fluid for liftgate wiper and washer operation is supplied by the washer fluid reservoir located in the engine compartment. For information on adding fluid to this main reservoir, refer to Washer fluid in the windshield reservoir in this chapter. CHECKING AND ADDING ENGINE COOLANT Adding engine coolant Do not put engine coolant in the container for the windshield washer fluid. If sprayed on the windshield, engine coolant could make it difficult to see through the windshield. When the engine is cool, add a 50/50 mixture of engine coolant and water to the engine coolant recovery reservoir - DO NOT ADD DIRECTLY TO THE RADIATOR. Add straight water only in an emergency, but you should replace it with a 50/50 mixture of coolant and distilled water as soon as possible. COOLANT FILL LEVEL 165