Fluid · Coolant
Coolant
for 2020 Cadillac CT6 4.2L V8 Twin-Turbo · AWD
Fluid Type
Dexcool orange extended life 50/50
Spec: GM 6277M or DEX-COOL
Capacity
14.5qt
13.72 L
Drain & Refill
12.5 qt
11.82 L
Change Interval
150,000 mi
241,350 km
Notes
First change at 150k miles, then every 5 years/150k miles. Higher capacity due to twin-turbo cooling
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