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Engine Oil
For 2017-2019 Chevy/GMC With 6.6L Duramax L5P Diesel Engine

2017-2019 Chevy/GMC 6.6L Duramax L5P Engine Oil Specifications & Capacities

Oil Viscosity
 Ambient Temperature
 Capacity
15W-40 Engine Oil
 Acceptable viscosity in ambient temps > 0° F
 10.0 Qt Capacity w/ Oil Filter (9.5L)
5W-40 Engine Oil
 Acceptable viscosity in ambient temps < 0° F (acceptable in all temps)
 10.0 Qt Capacity w/ Oil Filter (9.5L)
Engine Oil API Category: CJ-4 or CK-4

2017-2019 Chevy/GMC 6.6L Duramax L5P Maintenance Schedule

Replace Engine Oil & Filter: Interval
Normal Driving Conditions
 10,000 miles/12 months or when "change engine oil" message is displayed by the oil life monitoring system