Deposits in the cooling/heating system form barriers against heat exchange. blocking the thermostat and regulating mechanisms. Engine temperatures that are too high cause the engine to run uneconomically with increased wear and with a high risk of damage. LIQUI MOLY Radiator Cleaner removes calcareous deposits. ensuring the ideal engine temperature and reliability. Does not contain any aggressive acids and lyes. 300 ml are sufficient for 10 l cooling water. Compatible with all standard treating agents for coolants and antifreeze.