Can Tap Water Be Used as a Substitute for Windshield Washer Fluid?

1 Answers
SkylarLee
07/29/25 9:11pm
Tap water cannot be used as a substitute for windshield washer fluid. Below are the specific functions of automotive windshield washer fluid: 1. Cleaning Performance: Windshield washer fluid is formulated with various surfactants and additives. Surfactants typically have functions such as wetting, penetrating, and solubilizing, thereby achieving the effect of cleaning and removing dirt. 2. Antifreeze Performance: It can significantly lower the freezing point of the liquid, thus providing antifreeze protection and quickly dissolving frost. 3. Anti-fog Performance: A single-molecule protective layer forms on the glass surface. This protective film prevents the formation of fog droplets, ensuring the windshield remains clear and transparent with a clear field of vision. 4. Anti-static Performance: After cleaning with windshield washer fluid, substances adsorbed on the glass surface can eliminate surface charges, providing anti-static properties.
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