How often should windshield washer fluid be replaced?

[AlexanderMarie]

Windshield washer fluid should generally be replaced about once a month, with unopened washer fluid having a shelf life of 2 to 3 years. Car owners can add washer fluid themselves when they notice the fluid level is low or the reservoir is empty. Simply open the engine hood, locate the cap of the washer fluid reservoir, and pour in the fluid. During winter, it is essential to use washer fluid with a low freezing point to prevent it from freezing due to low temperatures. Windshield washer fluid, short for automotive windshield cleaning fluid, is a consumable item in vehicle maintenance. High-quality windshield washer fluid is primarily composed of water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. It typically functions to moisten, penetrate, and solubilize, thereby aiding in cleaning and removing dirt. Additionally, the presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid, providing anti-freeze and ice-dissolving effects.