Do you know how to properly top up the windscreen washer fluid and why you should not use water?

Windscreen wipers need to be maintained, and it is important to remember that good visibility reduces the number of road accidents. In addition to following our tips for extending the life of your wiper blades, it is advisable to learn how to properly top up the windscreen washer fluid and the reason why you should not use only water.

The windscreen washer system must always be kept in good condition to avoid possible risks. In addition, the nozzles should always be checked to prevent possible blockages and so that, if something lands on the windscreen while you are driving, you can clear it as soon as possible. Not only because something might fall on it, but because dirt can distort the light and stop you from seeing clearly.

How to top up the windscreen washer fluid correctly

You should also bear in mind that when you take your car for its MOT, this is one of the items they will check first. The first step to topping up the windscreen washer fluid correctly is to open the bonnet, regardless of the make and model of your car. Then you will need to locate the reservoir, which usually has a blue, yellow or black cap with a windscreen icon drawn on it. Be careful not to confuse it with the coolant.

The windscreen washer system is made up of components such as the reservoir, which holds the fluid; the hoses, through which the fluid flows; the nozzles, through which the fluid is sprayed; and the drive mechanism, a small electric motor that activates when the lever is pulled.

In modern cars, the wipers switch on automatically with just a few drops of water. In addition, if the car has a rear wiper or headlight washers, the system will have a reservoir at the rear so that the fluid has a shorter distance to travel. How do you top up windscreen washer fluid, and why should you not use only water?

The first step is to lift the cap and pour the fluid directly, carefully, so as not to dirty the other components. Do not fill it to the very top, and check that the cap is securely closed. You should not use only water because it can end up causing problems. The most common ones are freezing of the reservoir in winter, or a blocked nozzle; loss of visibility due to water freezing on the windscreen; limescale, which can leave deposits in the lines; rust, which can also damage the car’s components; and the rubber parts can deteriorate over time. Not to mention unpleasant odours.

We recommend that you use windscreen washer fluid instead of water, as this will help you avoid all the problems that water can cause in the vehicle.