Exceeds API Service Categories for heavy-duty-diesel engine oil: CK-4, CJ-4, CI-4, CI-4 Plus and older. This added layer of durability protection significantly reduces wear on bearings, rings, pistons, cylinders and valve trains.
Schaeffers 15w40 Diesel Oil #700 Synthetic CK-4 | 15w-40 Diesel Motor Oil
Shell Rotella T6 15W40 Synthetic Diesel Engine Oil 2.5 Gal
Schaeffer's 15w-40 Synshield 700 Diesel Engine Oil 5 Gallon Bucket
Schaeffers 700 Durability Advantage 15W-40 Diesel (4 Gallons)
Schaeffers 15W-40 SynShield Durability Advantage Engine Oil 15W40 3x Gallons
Red Line 21405 15W40 Synthetic Motor Diesel Oil -1 Gallon
