How to make your own windshield wiper fluid?

Many car owners have decided to make their own home-made windshield washer fluid, rather than buying commercially made fluids. But why? Well one of the main reasons are safety concerns. Most commercially manufactured windshield washer fluids contain methanol which is not only poisonous for humans but it’s also not environmental-friendly. So if you’re looking for a recipe for an environmentally-friendly windshield washer fluid, here it is.

Before we begin, there is one thing that we need to mention. Due to the weather conditions, you need to make sure that you drain your warm weather fluids before switching over to cold weather fluids.

Warm weather windshield washer fluid

Method 1

Just like the title says, this washer fluid is used in mild temperatures. Although it can be used in cold weather too, but with some modifications. Keep in mind that since the base of the fluid mix is vinegar, it’s not recommended to use it during extremely hot weather. Vinegary can produce a nasty odor. So what you need?

In order to make this windshield washer fluid you will need:

  • Distilled water
  • A large jug and
  • White vinegar

Tip: For storage and easier measurement, we recommend using large containers like milk jugs or soda bottles.  Before putting any of the components in those containers, make sure to clean them thoroughly.

Step 1: Pour distilled water in your large container until ¾ is full. So if you’re using a gallon, this means that you need to pour 12 cups of distilled water. And make sure that you use exactly distilled water since it’s cleaner than tap water and won’t clog up your vehicles spray nozzle.

Step 2: In the remainder of your large container, pour white vinegar. This should be about ¼.

Tip: Leave enough room so that you can mix the two components and make sure that you ONLY use white vinegar.

Method 2

This second type of windshield washer fluid is best suited for hot weather since the components don’t produce unpleasant smell like vinegar. For this mixture you will need:

  • Distilled water
  • A large container and
  • Window cleaner

Step 1: Just like before, fill up the container until ¾ are full

Step 2: Add about 8 oz of commercial window cleaner. Best to use the type that doesn’t streak.

Tip: Also, leave some room so you could mix the ingredients well.

Cold weather windshield washer fluid

If you live in an area where temperatures during winter can be pretty low, you might not be able to use the same windshield washer fluid all year long. So the types mentioned above can only be used in mild or hot weather, because both water and vinegar freeze.

Luckily, warm weather mixes can be easily adjusted for the cold weather and one of the easiest way to do this is by adding alcohol. Alcohol freezes at much lower temperatures so it’s more effective than water. We recommend using rubbing alcohol. Aside from alcohol, for this mixture you will also need:

  • Distilled water
  • A large container
  • Rubbing alcohol and
  • White vinegar

Step 1: Fill up the container (up to 3/4) with distilled water

Step 2: Fill the rest of the container with white vinegar

Step 3: Add a cup of rubbing alcohol and mix it all together.

Tip: If you wish to test if your mixture will ‘survive’ the cold weather, just leave it outside for a night. If the mixture freezes, then you will need to add a bit more alcohol.

Windshield washer fluid for all weather

In case you don’t want to switch windshield washer fluids twice a year, there is a mixture which is good no matter if it’s cold or hot outside. For this you will need:

  • Ammonia
  • Dish soap
  • Distilled water and
  • A large container.

Step 1: In the large container, add one gallon of distilled water and add one tablespoon of dish soap. Make sure that you use the kind that doesn’t streak.

Step 2: Add ½ cup of ammonia to the mixture. Ammonia is actually really good for cleaning windshield and it won’t freeze in cold weather.

Leave a Comment

Your email address will not be published. Required fields are marked *