How to Replace Summer Windshield Washer Fluid in Winter?

[VanMaximus]

If it's the same brand of windshield washer fluid, there's no need to drain the summer fluid - you can directly add the winter fluid as they are mixable. For different brands, first completely drain the summer fluid before pouring in the winter formulation. To remove summer fluid, simply hold down the windshield washer button until the system is emptied. Locate the filler neck (typically marked with a washer symbol and blue cap), open the cap, and pour in the winter windshield washer fluid.

[SanLola]

I remember the first winter when I didn't change the windshield washer fluid, and all the nozzles froze—it was beyond stressful. Later, I got smarter and started preparing before the cold hit: First, pop the hood and locate the washer fluid reservoir. I usually use a syringe or small tube to drain the remaining liquid, or simply press the washer button multiple times until it's completely empty. If the old fluid isn't fully drained, mixing it with new antifreeze can reduce its effectiveness or even fail to lower the freezing point enough. When adding new fluid, choose one specifically designed for winter, with the freezing point clearly labeled on the bottle—options range from -15°C to -30°C, depending on where you live. Friends in northern regions should opt for fluid with stronger antifreeze properties. Use a funnel to pour it in slowly, avoiding overfilling, and keep an eye on the reservoir's marked lines. After refilling, start the car and test the spray to ensure it flows smoothly, while also checking for any clogged nozzles. This simple habit can prevent poor visibility during smoggy weather and make driving much safer.

[McBenjamin]

In summer, windshield washer fluid is usually of the standard cleaning type, containing more distilled water; if not replaced in winter, it can freeze and clog the system. I recommend a thorough flush: open the hood to locate the reservoir, use a siphon tool to extract the old fluid, ensuring no residue remains at the bottom, as incomplete removal can affect antifreeze performance. Then, add winter-specific antifreeze fluid, which contains methanol or ethanol components, significantly lowering the freezing point—it's cheap and easy to find in stores. When purchasing, pay attention to the label's freezing point indication, ideally matching the local minimum temperature, such as around -20°C. Avoid mixing old and new fluids, as methanol may corrode rubber components. When flushing the system, you can briefly rinse it with purified water, and after adding the new fluid, test the spray nozzle to ensure it works properly. Antifreeze fluid also helps clean the windshield and prevents wiper wear, killing two birds with one stone.

[EmilioAnn]

Replacing windshield washer fluid is a common practice among drivers. My method is quite simple: Before winter, pick a sunny day, pop the hood, drain the remaining liquid from the reservoir, and wipe it dry with a towel or spray it out. Then, purchase a bottle of antifreeze windshield washer fluid and fill it up. Choose a reliable brand with a freezing point slightly lower than your local temperatures. Take your time when filling to avoid overflow. Using it in cold weather prevents frost and fog on the windshield, ensuring clear visibility while driving. Don't procrastinate on this small task—fixing a frozen system is much more troublesome.