hi... is this for the tank to be squirted onto the windscreen? thanks

This Prestone product is indeed for your windscreen-washer bottle and you should add it NEAT to the washer bottle. If there's no water in the bottle, you'll get protection down to minus 10 degrees C; if there's some water there, you'll dilute the Prestone and protection will not be as good. The Prestone formulation comes out very well in independent car-magazine tests, so it's a good product and, importantly, it doesn't smell like cheap perfume inside the car when you're using the windscreen washer on a journey (others do!). DO NOT CONFUSE Winter SCREEN Wash with Prestone's Antifreeze Product which is meant to be added to your car's radiator to prevent your circulating engine-coolant water from freezing and cracking your engine. As always in life, 'READ THE LABEL' on the container. SCREENWASH is for WindSCREENS : ANTIFREEZE is for your car's ENGINE!! Sorry to be like a schoolmaster but..... Hope this helps!

Can it be used undiluted in the summer?

I'd imagine you'd dilute it more during the summer and neater in the winter.

Is this suitable for car with headlamp washer

Used it in my car for the past 2 years and can not see why not.

Is the product ready to use or does it need diluting with water?

It depends on the time of year you will be using it. The directions suggest using neat during winter, a ratio of 1 part screen wash to 9 parts water in autumn and 1/19 in spring and summer.

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– Screenwash Concentrate 5L, Screen Wash For Cars - Winter, High Performance Cleaning With Streak Free Formula, Extreme Performance Super Concentrated Screenwash Winter, Reduce Plastic, 5 Litre

– Screenwash Concentrate 5L, Screen Wash For Cars - Winter, High Performance Cleaning With Streak Free Formula, Extreme Performance Super Concentrated Screenwash Winter, Reduce Plastic, 5 Litre

Product ID: 166157011

✨Streak-free crystal clear finish

💧Super concentrated formula

❄️Freeze protection to -18°C

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Description

❄️💧 Clear Vision, No Compromise – Drive Confidently All Year!

YEAR ROUND CLARITY - Engineered to keep your windshield spotless in every season, from icy winters to sunny summers.
EXTREME FREEZE PROTECTION - Use neat in winter to melt ice and prevent freeze-ups down to -18°C—drive safe no matter the chill.
CUSTOMIZABLE CONCENTRATION - Dilute precisely for the season—1:9 in autumn, 1:19 in spring/summer—maximizing value and performance.
POWERFUL DIRT GRIME REMOVAL - High-performance formula wipes away road salt, bugs, and grime with a guaranteed streak-free finish.
TRUSTED LEGACY COMPATIBILITY - Backed by 90+ years of Prestone innovation, safe for rain-sensing washers and headlights.

Prestone Screenwash Concentrate 5L is a super-concentrated, high-performance windscreen washer fluid designed for year-round use. It offers freeze protection down to -18°C, powerful cleaning to remove dirt, salt, and insects, and a streak-free finish. Dilutable to suit seasonal needs, it’s safe for modern car systems and backed by over 90 years of trusted Prestone expertise.

Specifications

ASIN	B007DIPQQK
Best Sellers Rank	515 in Automotive ( See Top 100 in Automotive ) 12 in Screenwash
Brand	Prestone
Customer Reviews	4.6 4.6 out of 5 stars (1,240)
Date First Available	25 Feb. 2012
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Item Weight	4.94 kg
Item model number	PSCW0028A
Manufacturer	Prestone
Manufacturer part number	PSCW0028A
Model	Extreme Performance Screen Wash
Package Dimensions	28 x 18.5 x 13.4 cm; 4.94 kg
Special Features	Concentrated

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146221CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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