How to Make Your Own Car Windshield Washer Fluid?
2 Answers
Making your own car windshield washer fluid involves the following steps: 1. Prepare a clean large metal basin and fill a large mineral water bottle with purified water; 2. Pour in approximately 500ml of medical alcohol and a capful of dishwashing liquid; 3. Stir the mixture thoroughly in the large metal basin. Windshield washer fluid, short for car windshield cleaning liquid, mainly consists of: water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants. The method to add windshield washer fluid is: 1. Open the front engine cover and locate the windshield washer fluid reservoir; 2. Open the packaging of solid windshield washer fluid and place it into the reservoir; 3. Add clean water until the reservoir is full; 4. Wait for the solid windshield washer fluid to completely dissolve.
When making my own windshield washer fluid, safety is my top priority since the washing system is quite delicate. I mix distilled water with isopropyl alcohol at a ratio of approximately two cups of water to one cup of alcohol, increasing the alcohol amount in winter to prevent freezing. For detergent, I use a mild dish soap—just two drops, as too much can cause foaming and clog the nozzles. I store the mixture in a clean plastic bottle and always test a small amount on the windshield first to check for residue or corrosion before filling the reservoir. Don’t forget to clean the nozzles regularly to prevent dust buildup. Never use tap water, as it leaves mineral stains that impair visibility. This method is cost-effective and eco-friendly, but avoid using strong alkaline detergents to save money, as they can damage the system—vehicle maintenance is not something to take lightly.
