At What Temperature Does Regular Windshield Washer Fluid Freeze?
2 Answers
Different models of windshield washer fluid on the market have varying freezing points, with some freezing at 0°C and others ranging from 0°C to -30°C. The functions of windshield washer fluid are as follows: Cleaning Performance: Windshield washer fluid is formulated with various surfactants and additives. Surfactants typically possess wetting, penetrating, and solubilizing functions, thereby effectively cleaning and removing dirt. Antifreeze Performance: The presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid, providing antifreeze properties and quickly dissolving frost. Anti-Fog Performance: A single-molecule protective layer forms on the glass surface, preventing the formation of fog droplets and ensuring clear visibility through the windshield.
I totally relate to this issue! Last winter, I took a shortcut by using tap water as windshield washer fluid, and it froze solid on a morning when the temperature dropped to -3 or -4°C, completely clogging the nozzles. Regular windshield washer fluid typically claims a freezing point of 0°C on the label, but in reality, it may start freezing at just -2 or -3°C. Some cheaper washer fluids actually have poor freeze resistance. I recommend friends in northern regions switch to antifreeze-type washer fluid before winter. If you find yourself unable to spray water like I did, don't force the switch—it could burn out the motor. Instead, head to an auto repair shop immediately to replace it with antifreeze washer fluid.
