RAVENOL J4D2000 OTC C12+ Coolant Antifreeze Concentrate (G12 Plus) (1.5 Liter) Formal factory Volkswagen/Audi approval for VW TL 774 F (G12+ Plus) coolant specification Formal factory MAN approval for 324 SNF coolant specification as well as meeting Mercedes-Benz MB 325.3 coolant specification Phosphate, silicate, nitrite, amine free OAT glycol formula that meets and/or exceeds G30 type OAT VW coolant Superior cold temperature performance with freezing protection up to-37 C (50/50 ratio) and up to -52 C (60/40 ratio) providing excellent frost protection in severe winter climates along with excellent heat transfer and dissipation qualities for high performance applications Undiluted boiling point of 175 C. High flow characteristics without cavitation in high flow, high temperature RPM cooling systems. Contains premium corrosion additives for optimal corrosion prevention for all metals and metal alloys