Can expired windshield washer fluid still be used?
2 Answers
No. The shelf life of windshield washer fluid varies by brand, but most typically last two to three years. Once expired, the fluid loses its original effectiveness and may cause certain damage to both the windshield and wiper blades. Here is additional information: 1. Definition of windshield washer fluid: Commonly known as automotive windshield cleaning fluid. It is a consumable automotive product. High-quality windshield washer fluid mainly consists of water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. 2. Function: When windshield visibility decreases, spraying the fluid can restore a clear field of vision. Especially during night driving, dust on the glass scatters light - spraying washer fluid at this time helps maintain optimal windshield transparency.
Don't even think about using expired windshield washer fluid. In my seven or eight years as an auto mechanic, I've seen too many painful cases. Expired fluid tends to form flocculent precipitates - clogging the nozzles is the least of your problems, the real issue is it can corrode the tubing and pump head. Especially in winter when using frozen washer fluid, ice crystals can crack the reservoir, and repairs often cost over a thousand yuan. Last time I saw a BMW owner try to save ten bucks this way, it clogged the nozzles and blew a fuse too. My advice? Toss it out immediately. When buying new fluid, pay attention to the freezing point. For cars left unused long-term, remember to spray the windshield washer monthly when starting up to prevent sediment buildup in the lines.
