Can you use Windex instead of windshield washer fluid in my car?

No, you should not use Windex in your car's windshield washer system. While both Windex and windshield washer fluid clean glass, Windex contains ingredients that can damage the washer system components, including the pump and rubber seals. It can also leave streaks on the windshield and potentially harm the paint of your car if it spills. Windshield washer fluid is specifically formulated for this purpose and is much safer for your vehicle.