1997 Ford Expedition Owner's Manual - Page 163

Maintenance and care CHECKING AND ADDING WASHER FLUID Adding washer fluid 1. Lift the washer fluid reservoir cover. 2. Add washer fluid until the level reaches the FULL line. Use only fluid that meets Ford Specifications. Refer to Capacities and specifications. The addition of a bug shield to the front of the vehicle may adversely affect the washer system from delivering fluid to the windshield. Devices such as bug shields are not recommended. Windshield washer fluid contains methanol and it is poisonous. Follow all instructions on the bottle of washer fluid. WASHER FLUID ONLY What you should know about washer fluid In freezing weather [temperatures below 0°C (32°F)], use washer fluid containing a small amount of antifreeze, such as methanol. State or local regulations on volatile organic compounds (VOCs) may restrict the use of methanol, a common type of antifreeze. Use a non-methanol antifreeze in freezing weather only if the fluid does not damage the paint finish, wiper blades and washer system. 164