Does Windshield Washer Fluid Need to Be Diluted with Water?

[StDaniela]

Whether windshield washer fluid needs to be diluted with water depends on the type of fluid purchased. Apart from the concentrated solutions used in large barrels by 4S shops and repair shops, all small 2L bottles sold on the market are standard-concentration windshield washer fluids that do not require dilution and can be directly poured into the washer fluid reservoir. Windshield washer fluid, commonly known as car windshield cleaning fluid, is a consumable in automotive use. High-quality windshield washer fluid is mainly composed of water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. Based on the antifreeze temperature, windshield washer fluids are generally categorized into summer type, all-season type, and antifreeze type.