1999 Mercury Cougar Owner Guide 1st Printing - Page 181

Maintenance and care Brake/clutch fluid reservoir Brake and clutch fluid systems are supplied from the same reservoir. The level of the fluid must lie between the MIN and MAX marks on the side of the reservoir. If the level falls below the MIN mark, the brake fluid level warning light on the instrument panel will illuminate. Add only DOT 3 or DOT 4 brake fluid that meets the Ford specification (see the Capacities and specifications chapter). If you use DOT 5 or any other brake fluid that is not DOT 3 or DOT 4, you will cause permanent damage to your brakes. Brake fluid is toxic. Do not let the reservoir for the master cylinder run dry. This may cause the brakes to fail. Windshield washer system If necessary, add enough washer fluid to fill the reservoir. Follow the instructions on the washer fluid container. Do not put engine coolant in the container for the windshield washer fluid. 181