What Causes Windshield Washer Fluid to Disappear Without Reason?

[Stephen]

Windshield washer fluid disappearing without reason is typically due to a leak in the washer fluid reservoir. Windshield washer fluid, commonly known as car windshield cleaning fluid, is a consumable item in vehicle use. It usually functions to moisten, penetrate, and solubilize, thereby aiding in cleaning and removing dirt. Due to the presence of alcohol and ethylene glycol, it significantly lowers the freezing point of the liquid, providing anti-freezing properties and quickly dissolving frost. It is not advisable to replace windshield washer fluid with water, as ordinary tap water contains more impurities. Over time, these impurities can adhere to the rubber hoses, affecting normal spraying. Long-term use may increase friction between the glass surface and the wiper blades, potentially causing scratches on the glass.