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Homemade windshield washer fluid12/16/2023 ![]() Buying the rubbing alcohol at full price would change the savings you are able to realize. However, this is based on the sale price. Not too bad if it doesn’t freeze up.įor mixtures 2 and 3 above, you would spend $1.25 on the rubbing alcohol. So for mixture #1 above you are going to spend 84 cents on 3 cups (24 ozs) of window cleaner to make your gallon of fluid. $1.67 for 32 oz of rubbing alcohol (.052 per oz) – this was a sale price $1.12 for 32 oz of window cleaner (.035 per oz) ![]() ![]() $1.17 for a gallon of windshield washer fluid good at 32 degree temperatures (.009 per oz) $1.64 for a gallon of windshield washer fluid good at -20 below temperatures (.012 per oz) $2.50 for a gallon of windshield washer fluid good at -25 below temperatures (.019 per oz) The prices below are for the Walmart brands, and not for brands like Rain-X or Windex window cleaner. Let’s look at the prices I found on a trip to Walmart. Some also questioned the wisdom of recipes that used ammonia and detergents as they felt it was hard on the car’s paint.įor me, this is really the crux of the matter. Apparently the commercial products use methanol, not isopropyl alcohol (rubbing alcohol). ![]() In my investigating I found comments by people with knowledge of cars who felt that in the long run, rubbing alcohol could be hard on the hoses in your vehicles. If you live in cold temperatures and are making your own fluid, you should put some in your freezer first to make sure it stays in liquid form and doesn’t freeze up. If you don’t have the mix of alcohol and water correct, you risk having it freeze up in your vehicle which could be costly. If you live in the cold and snow there’s a greater need for a product that works well. Let’s look at three important things to consider before you make your own windshield washer fluid:ĭo you live where there is snow and freezing temperatures? 1 Tablespoon liquid dishwashing detergent ![]()
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