An effective means of cooling system scale. to remove sediment and rust. Ensures optimal engine operating temperature without overheating. Regular use with every coolant change keeps the cooling system clean. thus reducing the chance of leaks. Suitable for use in all types of coolers. regardless of the type of coolant and its dilution with water. Use: 250 ml additive for up to 12 l cooling system. 400 ml for up to 20 l system.