Will Car Windshield Washer Fluid Freeze in Winter and What Are Its Functions?

[VonRemington]

Whether car windshield washer fluid freezes in winter depends on two scenarios: 1. Antifreeze washer fluid will not freeze. Antifreeze washer fluid ensures it remains unfrozen even when the external temperature drops below -20°C. It is an all-weather windshield cleaning solution containing antifreeze and cleaning components, capable of preventing freezing in winter and directly dissolving frost. 2. Ordinary washer fluid may freeze in winter. Windshield washer fluid primarily serves the following three functions: (1) Cleaning performance: Windshield cleaner is formulated with various surfactants and additives. Surfactants typically have wetting, penetrating, and solubilizing properties, thereby achieving cleaning and stain removal effects. (2) Antifreeze performance: The presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid, 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 unobstructed visibility.