Fluid · Coolant
Coolant
for 2022 Chevrolet Express 6.6L V8 Duramax Diesel · RWD
Fluid Type
Dex-Cool 50/50 orange
Spec: GM DEX-COOL
Capacity
29qt
27.43 L
Drain & Refill
24 qt
22.7 L
Change Interval
150,000 mi
241,350 km
Notes
Extended life OAT coolant. First change at 150k miles, then every 5 years/150k miles.
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