Can purified water replace summer windshield washer fluid?
1 Answers
In summer, purified water can temporarily replace windshield washer fluid, but long-term use is not recommended. Summer-specific washer fluids contain insect dissolving agents that quickly remove insect residue from windshields. Homemade alternatives mixing water with alcohol, dish soap, detergent, or laundry powder may form mineral deposits in reservoirs and rubber tubes over time, affecting spray function. Water droplets on windshields can also leave mineral deposits after evaporation, potentially increasing friction between wiper blades and glass, causing permanent scratches. Plain water lacks thorough cleaning power for dirt and insect remains on windows, and freezes easily in winter.