Screen Wash Sub Zero Windscreen Cleaner M015 5 litre - SeldenScreen Wash Sub Zero Windscreen Cleaner (Full Case 2 x 5L ) Selden sub zero screen wash M015 is a quick acting screen wash that will not freeze in winter conditions. Supplied in a concentrated form Selden screen wash can be used at a ration of 1 part screen wash to 40 parts water, meaning one 5L container will make up to 200 Litres of screen wash. Ideal for use in all types of vehicles, including taxis, haulage vehicles, buses and cars. Selden sub