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 reservoir caps are almost always blue, which should make it easy to find under the bonnet. Depending on the size of the bottle, we’d recommend using a funnel to add the screen wash. If you don’t have one to hand, turning larger bottles on their side can help with pouring.
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.
For winter driving, we recommend you use it neat; this ensures maximum freeze protection.
In Autumn, the ratio is 1 part screen wash to 9 parts water.
In Spring / Summer, the dilution ratio is 1 part screen wash to 19 parts water.
The great thing about Prestone Screen Wash is that it’s safe to mix with other products. That means you can add screen wash anytime without worrying about contamination and a drop in cleaning performance.