21/01/2026
How Screenwash Helps Prevent Frozen Windscreen Washers
As temperatures drop in winter, one of the most common — and easily avoided — motoring inconveniences is frozen windscreen washer fluid. Many drivers only discover the problem when they urgently need a clear windscreen and nothing comes out of the jets. The solution is simple: proper screenwash.
Screenwash is not just a cleaning additive; it is specifically formulated with antifreeze properties. Unlike plain water, quality screenwash contains alcohols (such as methanol or ethanol) that significantly lower the freezing point of the fluid. This prevents the washer reservoir, pump, hoses, and jets from freezing solid during cold weather.
Using water alone in winter can cause more than temporary inconvenience. Frozen washer systems can lead to split hoses, cracked reservoirs, or damaged pumps once the ice expands. These repairs are far more costly than using the correct screenwash in the first place.
Most screenwash products clearly state their level of frost protection, often down to temperatures as low as -10°C or even -20°C when used at the correct concentration. Diluting screenwash too heavily with water reduces its effectiveness, so it is important to follow the manufacturer’s mixing guidelines — or use a ready-mixed winter formula.
In short, using proper screenwash is a small but essential part of winter car maintenance. It keeps your windscreen clean, your washer system functional, and your visibility — and safety — intact when conditions are at their worst.
