Liqui Moly Pro-Line Radiator Cleaner effectively cleans coolant and heating systems by removing oil and lime-based deposits, ensuring optimal engine performance and preventing wear. This concentrate is safe for all systems, containing no aggressive acids or alkalis, and is compatible with all common cooling water refiners and antifreezes. One liter treats up to 50 liters of coolant. Application involves adding the cleaner to the coolant, running the engine at operating temperature for 10-30 minutes, draining, flushing, and refilling the system. Contains biocides as protective agents.