Q: How to maintain and replace windshield wiper blades on Mercury Cougar?
A: Regularly wash wiper blades with mild detergent to remove road film buildup. Inspect blades for cracks or hardness and replace if necessary. Wet windshield, cycle wipers, and check for uneven pattern or streaks. Tighten fasteners as needed. To remove blade assembly, push down on release spring and pull off wiper arm pin. To install, push blade assembly onto pin until it snaps. To replace rubber blade element, insert screwdriver to release from retaining claw. Slide element out and secure new one by twisting backing strip into end claws. Ensure all claws are locked before installing blade on wiper arm.