1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 215

Windshield Washer Fluid Washer Fluid Check the level of the windshield washer fluid periodically. The reservoir for washer fluid is located on the driver's side of the engine compartment. Do not operate the washer when the reservoir is empty. The reservoir for the windshield washer fluid RWARNING Do not put windshield washer fluid in the container for the engine coolant. Use specially formulated windshield washer fluid rather than plain water, because specially formulated washer fluids contain additives that dissolve road grime. For safety reasons, washer fluids containing an appropriate antifreeze such as methanol should be used in freezing weather (temperatures below 32˚F [0˚C]). State or local regulations on Volatile Organic Compounds (VOCs) may restrict use of the most common antifreeze, methanol. Washer fluids containing non-methanol antifreeze agents should be used only if they provide cold weather protection without damaging the vehicle's paint finish, wiper blades, and windshield washer system. 216