Fluid · Coolant
Coolant
for 2021 Chevrolet Silverado 3500HD 6.6L V8 L8T Gas · 4WD
Fluid Type
Dex-Cool 50/50 orange
Spec: GM 6277M or GM DEX-COOL
Capacity
23.8qt
22.51 L
Drain & Refill
20 qt
18.92 L
Change Interval
150,000 mi
241,350 km
Data quality
Book-style estimate
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Notes
L8T gas engine. Initial fill good for 150K miles, then 5 years/50K miles
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