Auto Express Car Reviews
Key to keeping your screen clear in winter is ensuring you have the correct mix for your screenwash.
Take time to dilute it correctly and you should be able to prevent it from freezing. Ready-mixed screenwashes tend to do better in summer, so fill up with frequent test winner Sonax 1:100 (£4.99).
Or for a more specialist winter screenwash, Sub Zero from CarPlan (£1.87) delivers good results in the cold.