Overview

YIDUN API CK-4 diesel engine oil is developed and manufactured by Baoding Muhai Lubricating Oil Import & Export Co., Ltd. Formulated with premium fully synthetic base stocks and new-generation heavy-duty low-ash additive packages. It exceeds CJ-4 performance, specially designed for China Ⅴ & China Ⅵ diesel engines equipped with DPF particulate filters and SCR urea after-treatment systems. It is suitable for severe working conditions of long-haul heavy trucks and mining construction machinery. Featuring long-lasting wear protection, superior oxidation resistance and efficient soot control. The low ash formula protects after-treatment systems and reduces DPF clogging risk. Backward compatible with CI-4 / CH-4 / CF-4. The 18L large pail is ideal for bulk maintenance procurement of transport fleets, mining and engineering enterprises to cut per-liter oil cost.

Key Features

✅ Long-Lasting Wear Protection for Heavy-Duty Service New-generation anti-wear formula forms high-strength lubricating film on pistons, cylinder liners and crankshaft friction pairs, minimizing component wear during long-haul and heavy site operation to extend engine service life.

✅ Low Sulfated Ash to Protect DPF After-Treatment Low ash formulation reduces combustion deposits, safeguards China Ⅴ & China Ⅵ DPF particulate filters, lowers clogging risk and reduces high after-treatment repair costs.

✅ Superior High-Temp Oxidation Resistance for Extended Drain Interval Excellent thermal stability and antioxidation performance. Resists aging and thickening under high temperature, enables long-mileage oil change and reduces downtime maintenance.

✅ High-Efficiency Soot Dispersancy, Prevent Sludge & Varnish Powerful soot dispersion technology avoids soot agglomeration, keeps engine internals clean and maintains stable power output.

✅ Balanced Base Reserve & Anti-Corrosion, Compatible with Low-Sulfur Fuel Well-tailored base number neutralizes acidic combustion by-products and protects bearings and cylinder liners. Matches China V & VI low-sulfur diesel and compatible with some high-sulfur diesel.

✅ 18L Large Industrial Pail, Ideal for Enterprise Bulk Maintenance Large-volume barrel reduces frequent repackaging and lowers per-liter cost, perfect for bulk maintenance of fleets, mines and construction machinery.

Viscosity / Specifications

5W-30, 5W-40, 10W-40, 15W-40

Application

China Ⅴ & China Ⅵ heavy-duty diesel engines with DPF/SCR after-treatment systems: heavy trucks, long-distance coaches, excavators, wheel loaders, tractors, diesel generator sets, mining machinery. Backward compatible with CI-4, CH-4, CF-4 engines.