Can purified water be used as a substitute for car windshield washer fluid?
3 Answers
Windshield washer fluid can be replaced with purified water by adding some detergent, although its cleaning performance may be slightly inferior. However, in winter, it is necessary to use antifreeze windshield washer fluid. Below is an extended introduction about windshield washer fluid: Composition of windshield washer fluid: The components of car windshield washer fluid include water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. Car windshield washer fluid is commonly used for car windows, rearview mirrors, as well as household glass, office glass, door and window glass, and decorative glass. It can quickly remove dirt and provide a bright, clean surface. Antifreeze windshield washer fluid: Specifically designed for winter use, antifreeze windshield washer fluid ensures that car equipment does not freeze or crack even when the external temperature drops below -20°C. During winter when temperatures are low and there is a need to clean the windshield on the road, windshield washer fluid not only effectively cleans but also helps to absorb static electricity.
I used to take the easy way out by using purified water instead of windshield washer fluid for long-distance driving. It worked fine in summer, but caused problems in winter. Purified water lacks antifreeze additives, which can freeze and expand at low temperatures, cracking the reservoir or nozzle holes. I experienced this once when the washer system froze in sub-zero temperatures, costing me over 300 yuan in repairs—a harsh lesson. Windshield washer fluid contains detergents that remove oil stains and rain marks, while purified water has poor cleaning power, leaving rainwater residue that blurs vision and makes driving dangerous. It's okay for short-term emergencies, but not recommended for long-term use. Once during heavy rain, I used purified water and nearly had an accident due to a water film left on the windshield. Now, I stick to professional windshield washer fluid for safety—a 20-yuan bottle lasts several months.
From an automotive maintenance perspective, using purified water as a substitute for windshield washer fluid carries significant risks. Windshield washer fluid contains specialized ingredients like antifreeze and surfactants, which prevent freezing at sub-zero temperatures and effectively remove insect residues. Purified water has weaker cleaning power, failing to wash away dust and rainwater easily, leading to water streaks that compromise safety. Vehicle systems are designed for dedicated fluids; prolonged use of purified water may corrode pipes or clog nozzles, increasing repair costs. A one-time substitution during shortages is acceptable, but switching back to genuine products promptly is crucial. Remember to check seasonal changes—winter demands antifreeze-type washer fluid to avoid hazards.
