Can Windshield Washer Fluid Expire?
1 Answers
Windshield washer fluid can expire. Expired windshield washer fluid should not be used as it loses its effectiveness. Unlike plain water that only serves a cleaning purpose, high-quality automotive windshield washer fluid is primarily composed of water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. Windshield washer fluid possesses the following properties: 1. Cleaning Performance: The fluid is formulated with multiple surfactants and additives. Surfactants typically have functions such as wetting, penetrating, and solubilizing, thereby achieving cleaning and stain removal. 2. Anti-Fog Performance: A monomolecular protective layer forms on the glass surface. This protective film prevents the formation of fog droplets, ensuring the windshield remains clear and transparent with unobstructed visibility. 3. Anti-Static Performance: After cleaning with the fluid, substances adsorbed on the glass surface can eliminate static charges on the glass, providing anti-static properties.