Featuring HD Expert’s Legacy Technology, Classic Is a Traditional Coolant Ideally Suited for Older Vehicles. Conventional Diesel:

•Low Silicate; Phosphate and Amine Free

•Aluminum Compatible

•Classic Conventional Diesel – Recommended for Use Where A Fully Formulated Heavy Duty Diesel Coolant Is Required.

•Does Not Require an Initial Charge of Sca.

•For Automotive, Light Duty, Heavy Duty Diesel & Natural Gas Engine Applications (On-Road Truck, Off-Road, Farm Equipment)

•Protects Heavy Duty Diesel Wet Sleeve Liners.

HD Expert Classic Antifreeze/Coolant Is a Superior Fully Formulated Traditional Engine Coolant Based on A Proprietary Formulation of Corrosion Inhibitors. The Low Silicate Level of This Aluminum Compatible Product Allows It to Be Used in Automotive, Light Duty, Heavy Duty Diesel, and Natural Gas Engine Applications Such as On-Road Truck, Off-Road and Farm Equipment. It Is Recommended for Use Where A Fully Formulated Heavy Duty Diesel Coolant Is Required. This Includes, But Is Not Limited To, Caterpillar, Cummins, Detroit Diesel, Ford, Freight liner, Gm, International Truck and Engine, Kenworth, Paccar, Peterbilt, Volvo Mack and Western Star.