1996 Ford Aerostar Owner's Manual - Page 287

Driveline Universal Joint and Slip Yoke The universal joints that come standard with your vehicle do not require lubrication. If your original equipment universal joints are replaced with universal joints equipped with grease fittings, lubrication will be necessary at the intervals shown in the Maintenance Schedule and Record booklet. Brake Fluid Your vehicle is equipped with a brake fluid level indicator in the master cylinder which lights the BRAKE warning light on the instrument panel when the brake fluid level is low. Under normal circumstances, your vehicle should not use up brake fluid rapidly. However, expect the level of the brake fluid to slowly fall as you put more mileage on your vehicle and the brake pads wear. Check the brake fluid at least once a year. You can do this by looking at the fluid level in the plastic brake fluid reservoir on the master cylinder. The fluid level should be at or near the MAX mark. RWARNING Brake fluid is toxic. If brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately. 309