3. Using Winter screen wash in summer
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Using Winter screen wash in summer
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Hi folks
Is prestone screenwash (winter formula) safe to use in summer. Only apprehension is that it will have de-icer which might strike more streaks on windshield in summer. Otherwise what stop it from cleaning the windshield in summer too. Screenwash name is Prestone Max visibility screenwash (winter formula).
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Re: Using Winter screen wash in summer
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This one??
Prestone Extreme Performance Screen Wash | Melts Ice to -18°C
Tested in the most extreme of conditions, the Prestone Extreme Screenwash can clear your car’s windscreen of stubborn dirt and melt away ice.
Prestone · prestoneuk.com



Name: Prestone Concentrated Screen Wash 5 Litres
Manufacturer’s Code: PSCW0028A

How to Use:
Dilute the screen wash as per the instructions on the back of the pack.

WINTER – Use neat

AUTUMN – 1:9 Screen Wash to water

SPRING / SUMMER – 1: 19

Then, locate your screen wash reservoir under the bonnet and top up your screen wash as required.

To reduce spillage and for greater control, you may wish to use a funnel.
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Re: Using Winter screen wash in summer
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Quote from: seagul on May 16, 2026, 09:59:30 am
Hi folks
Is prestone screenwash (winter formula) safe to use in summer. Only apprehension is that it will have de-icer which might strike more streaks on windshield in summer. Otherwise what stop it from cleaning the windshield in summer too. Screenwash name is Prestone Max visibility screenwash (winter formula).

I use that screenwash until well into summer without any problems, in fact, it may be helpful in removing dead flies.

Here is the Safety Data Sheet https://tinyurl.com/38cdrhnu
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Re: Using Winter screen wash in summer
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It seems that labelling summer or winter is just marketing tactics but obviously summer formula wouldn't be effective in winter. Prestone is no 1 brand with only £2 more expensive than ordinary ones but it contains all essential ingredients which eliminate dirt, grease & grime. Can remaining washing liquid be rubbed manually on wiper blades rubber to clean it. And can same screen wash be used on the glass of side windows with microfiber cloth.
« Last Edit: Yesterday at 03:32:39 pm by seagul »
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Re: Using Winter screen wash in summer
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Is this the stupid question thread? Can I join in? I usually check my tyre pressures in Asda, will it be a problem if i mix it with Tesco air?
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Re: Using Winter screen wash in summer
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Quote from: peodude on Yesterday at 03:40:12 pm
Is this the stupid question thread? Can I join in? I usually check my tyre pressures in Asda, will it be a problem if i mix it with Tesco air?

You must be new here. This is what the OP does - he posts random dumb motoring advice questions.
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Re: Using Winter screen wash in summer
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Quote from: peodude on Yesterday at 03:40:12 pm
Is this the stupid question thread? Can I join in? I usually check my tyre pressures in Asda, will it be a problem if i mix it with Tesco air?

Most important thing is to find out that how this question even come in to your mind. Members should only focus on the original query.
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Re: Using Winter screen wash in summer
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Quote from: peodude on Yesterday at 03:40:12 pm
Is this the stupid question thread? Can I join in? I usually check my tyre pressures in Asda, will it be a problem if i mix it with Tesco air?

I prefer pure Waitrose myself, it's more refined. Take a jack and make sure you expel all previous low quality air from each tyre before refilling.

Top tip: Buying 4 jacks allows you to save money on the airline timer.
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