OEM Extended Life BLUE Antifreeze/Coolant meets or exceeds performance requirements ASTM D3306 and JIS K2234. This long service life product is based on a proprietary extended life corrosion inhibitor technology that is free of silicates, borates, nitrites and amines. It protects coolant system metals against rust and corrosion and provides excellent high temperature aluminum protection. This coolant is fully compatible with other similarly formulated extended life coolants and is recommended for use in newer model Asian automotive and light duty trucks requiring a phosphate based OAT engine coolant. When added as an initial fill, this coolant provides up to 150,000 miles or 5 years service life protection in automotive applications. For best results, do not mix with conventional high pH, borate or silicate based antifreeze/coolant.