Screen Wash Concentrated is a powerful, ethanol-based antifreeze additive to supplement the screen wash. The product cleans grime and insects from the windscreen. By supplementing the screen wash with special additives, the windscreen does not refreeze and the windscreen washer jets do not freeze over. Application Screen Wash Concentrated can be added to the water in the windscreen washer tank. By adding in different proportions (see table), a high level of protection against freezing can be achieved. The product is less harmful to the environment than methanol or IPA-based windscreen washers, and is less harmful upon contact with the skin. Dilution advice: One part Screen Wash Concentrated - one part water offers protection down to: Pure -50 °C 1: 1 -20 °C 1: 2 -12 °C 1: 3 -8 °C 1: 5 Summer