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2025 GMC SIERRA 3500HD
6.6L V8 Duramax Diesel•4WD•AUTOMATIC•diesel•turbo
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Repairs0Labor526Torque144Fluid9DTC821Battery1Maintenance0Recalls0
Fluid · Engine Oil

Engine Oil

for 2025 GMC Sierra 3500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
15W-40 CK-4 or 5W-40 full synthetic CK-4
Spec: API CK-4
Capacity
10qt
9.46 L
Drain & Refill
10 qt
9.46 L
Change Interval
5,000 mi
8,045 km

Notes

LGH/LM2 Duramax diesel. Capacity with filter. ACDelco preferred. Use 5W-40 in extreme cold

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