The instructions recommend it is used at the ‘optimum clean’ dilution ratio of 1:9, which stops freezing down to a claimed -3 oC. Choose concentrated or ready to use screen wash– Our ready to use screen wash is convenient, while our concentrated version lets you adjust the ratio of water depending on the conditions. They both have the same properties, so choose the one that’s best for you. It will dramatically reduce sun dazzle – sun dazzle is dangerous and can easily cause accidents any time of the year. Making sure the washer reservoir is kept topped up will ensure you can keep the windscreen free from smears and streaks which cause dazzle. Developed to the same high performance standards you’ve come to expect from Prestone, Eco Refill Winter Screen Wash can also help you to reduce plastic waste. Thanks to its concentrated formula, just one small bottle of 500ml Prestone Eco Refill makes 5 litres of winter-ready screen wash – that’s a whole standard-sized bottle of screen wash for a fraction of the plastic. Prestone Extreme Performance Screen Wash ensures maximum cleaning power to remove stubborn dirt from your windscreen. It also helps you drive in extreme conditions all year round, by melting ice down to -18ᵒC and preventing dangerous sun dazzle.

It will help keep your car in good condition – screen wash is specially developed for cars, so you know that it’s safe to use. If you use water or household cleaners, there’s a risk of damaging the paintwork over time, so we’d always recommend high-quality screen wash. It’s a legal requirement– that’s right, you could receive a fixed penalty notice if the police pull you over and discover you have no screen wash, especially when there’s reason to believe that reduced visibility has caused you to drive dangerously. Prestone Screen Wash comes in both a concentrate and ready to use formats. When using concentrated screen wash, always follow the instructions on the bottle to get the right ratio of screen wash to water – this can change depending on the season.As we knew our freezer was measured at 18C, we mixed at a ratio of 1.5:1 which should have given us protection down to 19.5C. However, although there was some liquid evident in the syringe it was too frozen to squirt until it had been out of the freezer for a few minutes. Tesco Concentrated Screen Wash (& Tesco Ready To Use)

Plus, summer means the arrival of a sneaky danger — sun dazzle. Dazzle occurs when the sun’s rays shine on dirt and grime on a car’s windscreen, limiting visibility for the driver. If you keep your windscreen free of dirt and smears, then you’ll get better visibility and won’t have any nasty sun related surprises. Myth 2: Don’t use screen wash –water does the same thing This depends on your average mileage, driving conditions and the time of year. You may need to replace screen wash every week if you cover a lot of miles, particularly in the winter. In summer, you’ll generally use less screen wash, though it will be needed to remove streaks and dust from the windscreen to prevent dangerous sun dazzle. There’s no cheaper way we could find of making screenwash than this, except maybe putting a squirt of Fairy Liquid in the reservoir. But as with most things, you get what you pay for and the tablets seemed to do little more than colour the water . That means total clarity and 100% visibility, as well as zero chance for dangerous sun dazzle to interfere with your view of the road.As well as testing and our experience of using multiple screen washes, we also based our recommendations on the latest research and a number of factors. Some of the factors that we took into consideration included the formula’s type, seasonal use, freezing point, effectiveness and value for money. Conclusion

Cars rely on two different antifreeze products — antifreeze in screen wash and coolant/antifreeze. Both serve different purposes, but some people get the two muddled up, or think they’re the same thing. Fill until the reservoir is completely full. You may need to wait for some bubbles to subside before you continue pouring, depending on the product you’re using. Normally, the hose leading to the reservoir is semi-transparent, so you should have an idea of when it’s nearly full. And you’re done! As you might expect from the well-known and respected brand like Autoglym, the screenwash did well in the cleaning tests – but it’s expensive to use at winter temperatures.Prestone Max Visibility Summer Screen Wash provides rapid windscreen cleaning, powering through dirt and grime to guarantee exceptional clarity. And because it cleans so effectively, you’ll use less compared to other screen washes – saving you money by reducing the need to top up as regularly. Whether melting ice on a cold winter’s morning or eliminating dried-on bug splats in the height of summer; Prestone Extreme Performance Screen Wash delivers powerful windscreen cleaning when you need it most. We’ve dialled up the concentration level of our Eco Refill Winter Screen Wash, with a 500ml bottle capable of making up to 5 litres of screen wash. That means you can keep and use the same 5l bottle, topping it up with Eco Refill and water as and when you need to replenish your screen wash. Using Prestone Screen Wash is easy. Simply add enough screen wash to the reservoir so it meets the ‘max’ line, and then use your car’s wiper function (normally an arm switch on the steering wheel) to apply it to the front and rear windows. Screen wash is available in a variety of colours including blue, yellow, green, and pink. It’s made from a mix of water, antifreeze (usually alcohol) and cleaning agents, which are added to help remove dirt and ensure a streak-free finish. How do I use Prestone Screen Wash?