

This step is optional and is mainly as a safety feature so that the fluid is not accidentally used for a different purpose. Add 1 oz of washer fluid concentrate or dishwashing fluid such as Dawn or Joy.Pour the windshield wiper fluid into a spray bottle. Add 1 cup of white vinegar to the boiling water and stir continuously until the mixture thickens. For example, if your vehicle will be exposed to temperatures as low as -10 F, choose a mixture of 70% water and 30% methanol. Pour a gallon of water into a large pot and heat it until it reaches boiling point.In a clean 1-gallon jug, combine the water and methanol (if you do not have access to methanol, you can substitute rubbing alcohol), using the proportions listed in the table above.Isopropanol (%)įreezing Point of a Water-Isopropanol Mixture by Volume Windshield Washer Fluid Recipe If you are using 99, 91, or 70% isopropyl, then adjust the mixture accordingly. The table below shows the proportions for pure isopropyl alcohol.

You can use this instead of methanol, it will just require a higher concentration to prevent freezing. Wavex Windshield Washer Fluid For Car 1 Ltr - Car Windshield Cleaner Liquid In Concentrate Form - Car Wiper Liquid that protects the wipers and gives 100 optical clarity while driving. Isopropyl alcohol – also known as isopropanol – is commonly known as rubbing alcohol. Methanol (% Volume)įreezing Point of a Water-Methanol Mixture by Volume Freezing Point of Water/Isopropanol Mixture (by Volume) Choose the appropriate % methanol using this table. In order to avoid the washer fluid freezing in your vehicle, make sure that the freezing point of your mixture is below the lowest expected temperature your vehicle will encounter.īelow is a table showing the freezing point of pure water and methanol mixtures. Freezing Point of Water/Methanol Mixture (by Volume) Add the other ingredients, but just use straight water. If you are operating in a warmer climate and will not see temperatures below freezing, then you do not need to worry about adding alcohol or methanol to your mixture. Washer Fluid Concentrate or Dishwashing Liquid (1 oz).Clean Water (for best results use distilled).It is simply a mixture of the following ingredients: Windshield washer fluid is not complicated. If you purchase something through links on this website, I may earn a small commission, at no additional cost to you. You can even adjust the proportions as necessary depending on whether you need a summer or winter fluid! Rub in the lemon juice and let it stand for a bit, then rub again. Try taking half a lemon and rubbing the juice on a small area (Test a 6 inch x 6 Inch area) of the windshield to see if that is indeed your problem. Are you tired of paying a lot for windshield washer fluid? Have you ever considered making it yourself? In this post we go through an easy formula to make your own windshield washer fluid. The wipers would wipe but the haziness remained.
