Car expert says drivers should always ‘rub a potato on their windscreen’

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Motorists have been told to rub a potato into a car windscreen ahead of the winter to avoid frost and fog build-up as temperatures fall.

Experts at John Clark Motor Group have admitted using the vegetable can help prevent heavy frost build-up and even stop windscreens from fogging.

Other tipsters have also identified other benefits to taking advantage of the starch including in wet weather.

The new warning comes as temperatures begin to fall with some areas of Northern England expected to fall as low as -3 degrees celsius.

John Clark Motor Group said: “This one really isn’t just an old wives’ tale! Rubbing the cut side of half a potato against the outer surface can make a real difference to your windscreen.

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“Not only can it stop your windscreen from freezing in the winter, but it can also be a huge help when driving in the rain.

“The starch in the potato acts as a barrier between the glass and the air and can help with that all too common issue of your windscreen fogging up, making it hard to see.”

American channel ‘The Weather Network’ also shared the tip in a viral YouTube clip explaining a potato’s uses.

However, the group also made it clear drivers had to rub the potato in their glass the night before a cold spell to take full advantage.

Presenter Mia Gordon explained: “There’s actually some things you can do the night before to prepare yourself and your car to avoid any freezing the next morning.

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“Take a potato and cut it in half and then rub it on your car’s windshield. The sugar from the potato will create a barrier over the window that will help prevent ice from forming. The next morning simply rinse and wipe with your wipers.”

AutoBlog also reiterated the point in a special “car hacks” video where they showed it can also work with steam.

The host rubbed a potato on one half of his car window and then placed a boiling cup of water underneath it.

Amazingly the side without any potato starch on had become steamed up while the other half was completely fine.

Los Angeles based “Bezerra Good Tips” also showed the starch helped clear water off a windscreen in the event of heavy rainfall.

The video host again split his windscreen into two halves and rubbed a potato into one side before pouring water over the glass.

Speaking on Facebook, they said: “Look what happens when it rains. See this water trail on the glass. That’s exactly what blurs your visibility, especially if it’s heavy rain.

“Now I’m going to go ahead and put water where we applied the potato… The water comes down like a curtain, not like the other side.”

“And nothing remains, all the water goes down and no drops are left behind. There is absolutely nothing left on the glass.”

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