ty automobiles and trucks with aluminum cooling system components. compounds with minimal or no amounts of buffer agents. Where coolants composed of 2-EH acid show as approved for Cummins (*), a special silicate additive liquid or silicate filter is reqģ nic corrosion inhibitors: nitrite, molybdate, borate, phosphate, silicate. Automotive High Silicate antifreeze contains large doses of silicate additives for the protection of light duty automobiles and trucks They should never be used with supplemental coolant additives on a regular basis. "Other" OAT coolants are composed of other proprietary organic acid combinations instead of 2-ethyl hexanoic acid. ![]() Full OAT coolants are antifreeze products whose primary inhibitor package is composed of organic acid compounds with minimal OAT coolants containing 2-ethyl hexanoic acid (2-EH) were originally introduced by Texaco, Inc. ![]() ![]() Engine manufacturers recommend a 10% limit on mixing coolant types.Ģ Heavy Duty conventional coolants are antifreeze products treated with some or all of the following inorganic corrosion inhibitors: n Hybrid coolants are composed of organic acid technology combined with strong inorganic buffer agents like borate or phosphate. ![]() 1 Ethylene Glycol (EG) Coolants Color Inhibitor Package Meets Specifications North American Market Light Duty Heavy Duty Notes OEM Other Conventional Conventional Conventional Hybrid OAT OAT High Silicate* Low Silicate Fully Formulated (HOAT) (2-ethyl- (other w/out w/out w/out Full Daimler TMC ASTM w/out SCA with SCA hexanoic acid) organic acid) Silicate Phosphate Borate OAT Chrysler Ford GM CAT Cummins DDC RP329 D6210 Passenger Car High Silicate Green <2003 <2003 <1995 Arctic Blend Universal Green <2003 <2003 <1995 Fleetguard Universal Low Silicate Green <2003 <2003 <1995 Fleetguard Universal Recycled Coolant Green <2003 <2003 <1995 Shell Shellzone Low Silicate Green <2003 <2003 <1995 Universal Low Silicate Green <2003 <2003 <1995 Arctic Blend HD Fully Formulated Pink CAT Diesel Engine Antifreeze Coolant Pink Detroit Diesel PowerCool Pink Fleetguard ES Compleat Fleetguard Fleetcool Fleetguard Fleetcool Recycled Coolant Old World Industries Fleet Charge Prestone Heavy Duty Arctic Blend G-Plus DaimlerChrysler / Mopar 2003 Fleetguard Fleetcool E Ford Motorcraft Premium Gold Peak CF-EL Extended Life Coolant Valvoline Zerex G-05 CAT ELC ChevronTexaco Delo Extended Life Coolant GM DE-COOL Prestone Extended Life 5/150 Shell Rotella Extended Life Coolant Texaco Havoline DE-COOL Texaco Havoline Extended Life Coolant Valvoline Zerex ExtremeLife 5/150 Valvoline Zerex Extended Life Extreme 3/300 Detroit Diesel PowerCool Plus Old World Industries Final Charge Fleetguard ES Optimax Compatibility*** Conventional High Silicate Conventional Low Silicate w/out SCA Blue Pink Green Pink Pink Yellow Orange Pink Yellow Yellow Yellow Red ** Red ** Orange Orange Red ** Orange Red ** ** Orange Red Red Red Red Conventional Fully Formulated with SCA Hybrid (HOAT) OAT (2-ethyl-hexanoic acid) OAT (other organic acid) Comments *Do not use SCA with conventional high silicate antifreezes **Requires special silicate additive liquid or silicate filter to protect certain gasket materials ***Mixing different types of antifreezes can reduce their corrosion protection.
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