The Würth 08935562 Cooling System Cleaner is a high-performance, water-based solution designed to thoroughly clean and flush automotive cooling systems. It effectively removes operational deposits such as oil, sludge, and rust, ensuring optimal heat exchange and preventing overheating. This transparent, characteristic-smelling cleaner is suitable for use before adding new coolant, preparing the system for fresh fluid and extending the life of cooling components. It is compatible with all common coolants and antifreeze, is biodegradable, and free from AOX, silicones, and heavy metals. With a volume of 0.3 L and a density of 1.05 kg/L, it has a pH value of 10.5 and a shelf life of 24 months when stored frost-free.