Should Windshield Washer Fluid Be Drained in Winter?

[SanCourtney]

Windshield washer fluid does not need to be drained in winter. Antifreeze windshield washer fluid: Whether the windshield washer fluid should be drained in winter depends on whether the fluid in the reservoir is antifreeze type. If summer windshield washer fluid was previously added, meaning the fluid's freezing point cannot meet the usage requirements, it must be drained and replaced with antifreeze windshield washer fluid. Otherwise, there is a risk of the fluid freezing, which could damage the reservoir or the washer pump motor. Introduction to windshield washer fluid: Automotive windshield washer fluid is formulated with various surfactants and additives, providing functions such as wetting, penetration, and solubilization to achieve cleaning and stain removal. It significantly lowers the freezing point of the liquid, thereby preventing freezing and quickly dissolving frost. It also prevents the formation of fog droplets, ensuring the windshield remains clear and transparent for optimal visibility.