OEM Premium Extended Life RED CONCENTRATE Antifreeze/Coolant meets or exceeds performance requirements ASTM D3306 and JIS K2234. It is recommended for use in Toyota/Scion/Lexus and other automotive and light duty vehicles requiring a OAT engine coolant. This ethylene glycol based antifreeze/coolant provides extended protection against rust, corrosion and pitting caused by cavitation for all coolant system metals, including aluminum. The superior performance of this long service life product allows it to go on working well beyond the lifetime of traditional products. When added as an initial fill and properly maintained in accordance with engine manufacturer's maintenance recommendation, this coolant provides up to 150,000 miles or 5 years of service life protection in automotive applications. For best results, do not mix with conventional high pH, borate or silicate based antifreeze/coolant.