This item contains a bittering agent. Valvoline ZEREX G-05 antifreeze coolant is a long life, fully formulated, ethylene glycol-based fluid suitable for passenger cars, light trucks and heavy duty vehicles. The formulation is designed for both gasoline and diesel engines. Its lower-silicate, reduced pH, phosphate free European technology protects all cooling system metals, including aluminum, from corrosion. ZEREX G-05 is a nitrite containing coolant designed to protect diesel engine cylinder liners from cavitation. It contains deposit control additives for protection from hard water deposits and scale. The ASTM and other test data shown on this sheet reflect the high performance corrosion inhibitor package. When diluted 50% with water, ZEREX G-05 protects modern engine components from winter freezing and summer boil over. A 50% to 70% concentration range is suggested for optimum corrosion protection. ZEREX G-05 is compatible with other premium brands of coolant commonly . It contains a high quality defoamer system and will not harm hoses, plastics or original vehicle finishes. It is also suitable for use in Cummins Deere, Detroit Diesel, Mercedes, MTU, CAT, Navistar, Isuzu and Yanmar diesel engines. ZEREX G-05 is approved by Ford North America for newer models. Call 1-800- TEAM-VAL with questions. ZEREX G-05 antifreeze coolant is approved, meets or exceeds the performance requirements of the following antifreeze specifications and/or is recommended: ASTM D3306 Cummins 14603 Approved ASTM D6210 GM 1899M GM 1825M MTU / DDC Approved Mercedes Benz Approved Perkins Diesel CAT EC-1 Mack Paccar TMC of ATA RP-329B Federal Specification A-A-870A Chrysler MS 9769 Approved Ford WSS-M97B51-A1 Approved Detroit Diesel 7SE298 Approved John Deere & Co. Approved GE Wind Turbines Approved Navistar