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Using Winter screen wash in summer

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Using Winter screen wash in summer
on:
#1
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
Reply #1 on:
#2
This one??
https://www.prestoneuk.com/products/screen-wash/extreme-performance-screenwash/


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.
Re: Using Winter screen wash in summer
Reply #2 on:
#3
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
Re: Using Winter screen wash in summer
Reply #3 on:
#4
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: May 18, 2026, 03:32:39 pm by seagul
Re: Using Winter screen wash in summer
Reply #4 on:
#5
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
Reply #5 on:
#6
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.
I am responsible for the accuracy of the information I post, not your ability to comprehend it.
Re: Using Winter screen wash in summer
Reply #7 on:
#8
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.