At What Temperature Does Windshield Washer Fluid Freeze in a Car?

[Florence]

Different models of windshield washer fluid have different freezing points. Anti-freeze windshield washer fluid: It depends on whether the windshield washer fluid added to the reservoir is anti-freeze type. If summer windshield washer fluid was previously added, meaning the freezing point of the fluid does not meet the usage requirements, it must be drained and replaced with anti-freeze windshield washer fluid. Otherwise, there is a risk of the fluid freezing, which could damage the reservoir or the windshield washer pump. Introduction to automotive windshield washer fluid: Automotive windshield washer fluid is composed of various surfactants and additives, providing functions such as wetting, penetration, and solubilization, thereby achieving cleaning and decontamination effects. It can significantly lower the freezing point of the liquid, thus preventing freezing and quickly dissolving frost. It also prevents the formation of fog droplets, ensuring the windshield remains clear and transparent for unobstructed visibility.