Fluid · Engine Oil
Engine Oil
for 2026 GMC Sierra 2500HD 6.6L V8 L8T · 4WD
Fluid Type
0W-20 full synthetic
Spec: dexos1 Gen 3
Capacity
8qt
7.57 L
Drain & Refill
8 qt
7.57 L
Change Interval
5,000 mi
8,045 km
Data quality
Book-style estimate
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Notes
Capacity includes oil filter
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Other fluid systems on this vehicle
A/C Refrigerant
A/C Refrigerant
Brake Fluid
0.9 qt
Brake Fluid
0.9 qt
Coolant
28.5 qt
Coolant
28.5 qt
Front Differential
3.8 qt
Power Steering
Power Steering
Rear Differential
5.7 qt
Rear Differential
5.7 qt
Transfer Case
2 qt
Automatic Transmission
17.4 qt
Automatic Transmission
17.4 qt
Washer Fluid
1.3 qt
Washer Fluid
1.3 qt