Frosty mornings are back, and with them the ice scraper. On October 30, a Norwegian hospitality site reported that drivers swear by cooking spray sprayed on the window the night before, a tip that El Cronista also shared in English. It’s plain white vinegar. Here’s what it can actually do, what it can’t do, and where it can cause damage.
In brief
- Mix 3 parts white vinegar with 1 part water and spray a thin layer on the windshield the day before frost.
- The aim is to prevent the formation of frost. This won’t melt the ice already there.
- AAA experts note that the freezing point of the mixture is only slightly lower than that of water, so the effect is modest.
- Keep it away from paint, wiper blades and any chipped or cracked glass.
What is it for
The method comes from the Norwegian site Houz.no: 3 parts white vinegar to 1 part cold or lukewarm water, with one or two drops of dish soap if you want the mixture to be better distributed. You spray it on a clean windshield in the evening, ideally when frost is forecast, then wipe it lightly with a microfiber cloth to spread the film without rubbing it off. In the morning, a few passes of the windshield wipers dissipate the light dew.
The English edition of El Cronista adds that vinegar also cleans windows, eliminating insect remains, tree sap and traces of hard water, and can reduce condensation inside the car. He attributes the antifreeze effect to acetic acid, which lowers the freezing point of water, like salt.
Does it really work?
In part. The fact-checking site Snopes concludes that the mixture “may help keep glass from icing up” but “probably won’t help clean already icy glass,” and notes that there is “no consensus” on its effectiveness. WUSA9’s VERIFY team came to the same split verdict after checking with AAA: “Once the ice is there, spraying this mixture won’t remove it” because its freezing point is “barely lower than water.” However, as a preventative measure, it “might work”.
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How to do it
- Start with clean, dry glass. Dirt and old films prevent the mixture from spreading evenly.
- Spray a thin layer from the top edge to the bottom corners. Too much can leave marks when thawing, warns Houz.no.
- Spread it with a microfiber cloth and park as usual. On very cold nights, the site suggests an extra light layer in the early evening.
- The morning, run the windshield wipers and use a soft scraper on the remaining thin crystals.
The limit
Vinegar is an acid, so where it lands matters. Snopes advises quickly wiping up any paint or chrome spills, and Houz.no recommends keeping the spray away from wiper rubber, which can dry out. Auto glass professionals cited by VERIFY warn that prolonged exposure can worsen damage to an already chipped or cracked windshield. In extremely cold weather, a thin layer of frost may still form and the smell may be strong on the first ride, so break a window. Whatever you do, never pour hot water on frozen glass: Houz.no points out that thermal shock can crack it. Commercial antifreeze sprays remain an alternative, Snopes notes.
White vinegar has other uses around the home, from dull and dirty keys has the floor around the toilet. And while you prepare for winter, here is what the carpenters do on the terrace before the first snow.
A spray, a thin layer and a quiet night. That’s the thing.
Gn bussni
