Liqui Moly Cooling System Radiator antifreeze 620016 - Liqui Moly 21145, Liqui Moly's KFS 12+ 21145 Radiator antifreeze is a specialised coolant designed for optimal radiator performance and protection. This 1-litre antifreeze ensures efficient heat transfer and corrosion resistance. It is typically used in automotive cooling systems to maintain engine temperature and prevent freezing in cold weather. Liqui Moly 21145 KFS 12+ Radiator Antifreeze 1L - Advanced OAT Formula