When should windshield washer fluid be refilled?

Windshield washer fluid should be refilled when the fluid level is low. This is important for maintaining proper visibility while driving, as adequate washer fluid is crucial for cleaning the windshield, especially in adverse weather conditions or when encountering dirt and debris on the road.

While it is good practice to check the fluid level before long road trips or during oil changes, the primary condition for refilling is simply when it becomes low. The suggestion to only refill during winter months does not account for the need for clear visibility year-round. Therefore, monitoring fluid levels regularly and refilling when necessary ensures that the windshield washer system is always ready to function effectively, regardless of the season or driving conditions.