OEM Extended Life EURO II Antifreeze/Coolant meets or exceeds performance requirements of ASTM D3306, BS6580 and VW TL 774F. It is recommended for use in Audi, VW, Porsche and other newer model foreign cars and light duty gasoline or diesel engine vehicles requiring a nitrite, amine and phosphate (NAP) free, OAT engine coolant. This ethylene glycol based antifreeze/ coolant uses Hybrid Organic Acid Technology (HOAT) to provide extended protection against rust, corrosion and pitting caused by cavitation for all coolant system metals, including aluminum. When added as an initial fill and properly maintained in accordance with engine manufacturer's maintenance recommendation, this coolant will provide up to 250,000 km or 5 years of service life protection in automotive applications. For best results, do not mix with conventional high pH, phosphate, borate or silicate based antifreeze/coolant.