How often should I refill windshield wiper fluid?

The refilling frequency of windshield washer fluid should be flexibly adjusted according to actual usage and seasonal changes, as there is no universal standard. For frequent daily driving in dusty or bug-prone conditions (e.g., highways or suburban areas), it's advisable to check and refill every 1-2 months. To check fluid levels: 1. Observe reduced spray intensity 2. Listen for pump cavitation sounds 3. Visually inspect the reservoir's transparent level indicator 4. Note dashboard warning lights (on equipped models) Seasonal considerations: - Summer: Use bug-removal formula for stubborn residues - Winter: Select antifreeze fluid rated below local minimum temperatures (e.g., -15°C or -30°C) to prevent reservoir/pipeline damage from freezing Important precautions: × Never substitute tap water (mineral deposits clog nozzles; freezing risk) ✓ Check levels during routine car washes ✓ Maintain formula consistency by sticking to one brand ✓ Dilute concentrates per manufacturer instructions ✓ Never exceed MAX fill line when refilling