Can expired windshield washer fluid still be used?
2 Answers
Expired windshield washer fluid should not be used. Outdated washer fluid has reduced cleaning effectiveness and may cause damage to the wiper blades and windshield when poured into the vehicle's washer reservoir. Windshield washer fluid is categorized into three types based on seasonal usage: summer formula, winter antifreeze formula, and heavy-duty antifreeze formula. Among these, the summer variant contains mosquito repellent agents. Below is relevant information about windshield washer fluid: 1. Usage method: When using windshield washer fluid, it can be directly poured into the vehicle's washer reservoir for cleaning and maintaining the windshield. Alternatively, a soft cloth moistened with the fluid can be used to wipe away stains and dirt. In extremely cold winter conditions, it can also be paired with anti-fog agents to prevent windshield fogging and maintain visibility. 2. Product classification: Windshield washer fluid can be divided into two forms—liquid and solid. Based on seasonal usage, it falls into three categories: summer formula, winter antifreeze formula, and heavy-duty antifreeze formula. The summer formula contains mosquito repellent agents and helps raise the boiling point of water, while the winter antifreeze and heavy-duty antifreeze formulas contain ethanol and ethylene glycol to lower the freezing point of water.
It's best not to use expired windshield washer fluid. When I was younger, I thought it didn't matter to save a few bucks, but once I used an expired bottle. It left a layer of water stains on the windshield that couldn't be wiped clean under the wipers, and during heavy rain, my vision was blurred, nearly causing an accident. The additives in aged windshield washer fluid may precipitate and deteriorate, clogging the nozzle pipes and significantly reducing cleaning power. Improper storage in summer heat can accelerate deterioration. Fresh windshield washer fluid not only cleans better but also protects the rubber of the wipers. Keeping a new bottle in the car and developing a habit of checking the expiration date is the safest. Don't risk an accident for a few dollars—safety is no small matter.
