Do I need to add water when filling up with windshield washer fluid?

[McAustin]

Adding water is necessary when filling up with windshield washer fluid. Here are some precautions regarding windshield washer fluid: 1. Purchased windshield washer fluid needs to be diluted before use; simply follow the instructions on the manual. 2. In summer, it is acceptable to add products like distilled water, but be sure not to add liquids with impurities (such as tap water), as they may cause clogging of the spray nozzles. Additionally, ensure to spray out and replace all the fluid before winter arrives. 3. Do not overfill. When adding windshield washer fluid yourself, be careful not to fill it too full. Some foam at the container opening does not affect usage. 4. In autumn and winter, the windshield washer fluid should have excellent cleaning and antifreeze properties. Winter windshield washer fluid should be selected based on its antifreeze performance, choosing a product with a freezing point at least 10°C lower than the local minimum temperature. Otherwise, the fluid may freeze, leading to issues like a malfunctioning washer pump.