Diesel engine lubricating oil composition

The present invention provides a diesel engine lubricating oil composition, which contains a neutral base oil, an HSD type viscosity index improver, a high alkalinity detergent, a dispersant, zinc dialkyl dithiophosphate, an auxiliary antioxidant and a pour point depressant. According to the present invention, good compatibility exists among various components; the diesel engine lubricating oil composition has characteristics of excellent viscosity-temperature property, excellent cleaning dispersion, oxidation resistance, corrosion resistance, abrasion resistance, and shear stability so as to ensure that the oil product has a suitable viscosity under low temperature, high temperature, high shear environments of the engine, and the composition can be applied in wide geographic areas; and the composition can meet specification requirements of high-grade diesel engine oil with a grade of API CF-4 or above.