Does the car's windshield washer fluid need to be diluted with water?

2 Answers
DiRylee
09/03/25 6:18am
The need to dilute the car's windshield washer fluid with water depends on the type of fluid: 1. Non-concentrated liquid windshield washer fluid cannot be diluted with water and can be directly poured; 2. Solid windshield washer fluid can be diluted with water, dissolve it in clean water before use and then pour; 3. Highly concentrated liquid windshield washer fluid needs to be diluted with water in proportion, as direct use is too corrosive. The functions of windshield washer fluid are: 1. Cleaning performance: It has wetting, penetrating, and solubilizing functions; 2. Anti-fog performance: It can significantly lower the freezing point of the liquid, providing antifreeze effects; 3. Anti-static performance: It forms a single-molecule protective layer on the glass surface; 4. Anti-static performance: It can eliminate the charge on the glass surface; 5. Lubricating performance: It has a higher viscosity, providing lubrication; 6. Anti-corrosion performance: The fluid contains various buffers; 7. Efficient cleaning: It thoroughly removes dust and stains from smooth surfaces.
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DelParker
09/15/25 7:45am
I've been driving for over ten years, and windshield washer fluid is definitely not something to take lightly. Whenever the front windshield gets dirty while driving, you need to spray it, and there are specifics when it comes to refilling the fluid. Dedicated windshield washer fluid contains cleaning agents, antifreeze, and components that lubricate the wiper blades—just adding tap water messes everything up. Especially in northern winters, tap water can freeze and crack the reservoir, costing hundreds to repair. Moreover, the limescale from tap water can clog the spray nozzles. Once, I used tap water as a substitute, and within less than two months, the nozzles were completely blocked, forcing me to go to the repair shop to unclog them. I recommend buying that concentrated windshield washer fluid from supermarkets, which costs around ten yuan—just mix it with some purified water, and it's ready to use. It's both cheap and safe. In summer, it's best to check the fluid level monthly to maintain clear visibility—it's really important.
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