Liqui Moly Cooling System Radiator antifreeze 620016 - Liqui Moly 21149, Liqui Moly's KFS 11 21149 radiator antifreeze is a 1-litre solution designed to protect vehicle radiators. This antifreeze features effective corrosion protection and excellent heat transfer capabilities. It is typically used in automotive cooling systems to ensure optimal performance and longevity. Liqui Moly 21149 KFS 11 Antifreeze 1L Frost Corrosion Protection