Fluid · Engine Oil
Engine Oil
for 2025 Chevrolet Express 6.6L V8 Duramax Diesel · RWD
Fluid Type
15W-40 CK-4 diesel oil
Spec: API CK-4 / CJ-4
Capacity
10qt
9.46 L
Drain & Refill
10 qt
9.46 L
Change Interval
5,000 mi
8,045 km
Notes
Capacity with filter replacement. 0W-20 Dexos2 full synthetic can also be used. Oil life monitor dictates interval
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