Can Expired Windshield Washer Fluid Still Be Used?

[VanAddyson]

Expired windshield washer fluid cannot be used. No matter how high-quality the fluid is, it becomes ineffective once it deteriorates. When purchasing windshield washer fluid, car owners should first check whether the product has exceeded its expiration date. Secondly, they should inspect the fluid for any sediment, as its presence indicates that the fluid has deteriorated. High-quality windshield washer fluid is made from deionized water and various environmentally friendly additives, offering functions such as cleaning, antifreeze, anti-static, and anti-corrosion. Some windshield washer fluids also feature rapid snow and ice melting, anti-glare, and anti-fog properties, which play a significant role in improving driving safety. Low-quality windshield washer fluids are mostly diluted with water and alcohol, which not only damages the gloss of the car's paint and the hardness of rubber seals but can also cause discoloration or swelling of rubber or plastic parts in severe cases.