Fluid · Coolant
Coolant
for 2012 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
Dexcool orange extended-life 50/50
Spec: GM DEX-COOL (OAT)
Capacity
28.4qt
26.87 L
Drain & Refill
22 qt
20.81 L
Change Interval
150,000 mi
241,350 km
Notes
Initial fill: 150k/5 years. Subsequent: 5 years/150k. Includes engine and heater core.
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