What is the optimal position for windshield washer fluid spray?
2 Answers
There is no fixed optimal position for windshield washer fluid spray. Car owners need to adjust it themselves by using a needle or a thin object to gently move the nozzle while testing repeatedly until the best position is found. Windshield washer fluid is a liquid used to clean the windshield of vehicles and other means of transportation. It is a consumable item in car maintenance, mainly composed of water, alcohol, ethylene glycol, etc. The following are the functions of windshield washer fluid: 1. Cleaning performance: Windshield washer fluid is formulated with various surfactants and additives. Surfactants usually have functions such as wetting, penetrating, and solubilizing, thereby achieving the effect of cleaning and removing dirt. 2. Anti-freezing performance: It can significantly lower the freezing point of the liquid, thus preventing freezing and quickly dissolving frost. 3. Anti-fog performance: A single-molecule protective layer forms on the glass surface, which prevents the formation of fog droplets, ensuring the windshield remains clear and transparent with a clear view.
Having driven a taxi for fifteen years, I know exactly how to adjust the windshield washer fluid spray. The nozzles should be aimed at the upper half of the windshield, roughly at the center of the area swept by the wiper arms. This ensures the sprayed fluid is instantly and evenly spread by the wipers without leaving clean spots in the middle and dirty streaks on the sides. Especially during heavy rain, the fluid flow should cover the most critical area obstructing visibility. Veteran drivers all know you can adjust the angle with just a large pin—remember to do it with the engine off. First, spray to check the landing point, then gradually adjust it to the area the wipers can cover. Don’t aim too high to hit the roof or too low to waste fluid on the hood, which can be troublesome when it freezes in winter. Once properly adjusted, it’s effortless on long drives—just press the button and it’s clean in a swipe.
