DUNSHUN LUBRICANTSHeavy-Duty Diesel Engine Oil
Three diesel grades covering legacy fleets through the latest low-emission engines — from API CF-4/CH-4 legacy grades to long-drain API CK-4 formulations, in 4 L, 18 L and 200 L packing.
API CK-4
CK-4 5W-30
Fuel-economy diesel for modern light trucks and pickups
API CK-4
CK-4 10W-40
Long-drain synthetic for China-VI trucks and buses
API CI-4
DIIFOR D800
10W-40 synthetic technology · China-V and below
Grade Selection Guide
| Engine requirement | Recommended grade | Why |
|---|---|---|
| China-VI / Euro 6 emission, DPF & SCR aftertreatment | CK-4 10W-40 | Low-SAPS additive system protects DPF, long drain interval |
| Modern light-duty diesel, fuel economy priority | CK-4 5W-30 | Lower HTHS friction, cold-start protection |
| China-V and below, mixed fleets | D800 CI-4 10W-40 | Robust soot handling, cost-efficient |
| Legacy CF-4 / CH-4 equipment | On request | 20W-50 grades available for older engines and hot climates |
Export packing: 4 L × 6 cartons, 18 L pails, 200 L drums — drum and IBC packing available for OEM customers.