What Temperature Windshield Washer Fluid Should Be Used in Winter?
2 Answers
In winter, you should choose a windshield washer fluid with a freezing point at least 10°C lower than the local minimum temperature. Here is some relevant information about 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.
Having driven in the north for over a decade, choosing the right antifreeze level for windshield washer fluid is crucial in winter. Regular washer fluid freezes at 0°C, making it extremely dangerous when you can't spray water on the windshield. In my hometown, where temperatures can drop to -20°C, I always keep -25°C washer fluid on hand. When selecting, first check the weather forecast, then choose a fluid rated for 5°C below the local minimum temperature for safety. For example, in Beijing where winter temperatures hover around -15°C, I use -20°C fluid. Supermarkets typically stock three types: 0°C, -25°C, and -40°C – don't make the mistake of buying the wrong one just to save money. Remember to replace summer fluid before November when winter sets in, otherwise freezing can crack the reservoir. I always keep a jug of -30°C fluid in my trunk year-round, ready to spray for frost and snow removal whenever needed.
