Chevrolet Low Cab Forward 6.7L 2022 Owner's Manual page 200

Recommended SAE Oil Viscosity Grades vs Low Ambient Temperatures
This Engine Oil Viscosity Grade Chart shows
general information.
For this vehicle, oil with *W-40 viscosity is
recommended.
Changing the Engine Oil and Oil Filter
Engine oil and the oil filter are important
factors in engine performance and lifespan.
Be sure to use only the specified oil and oil
filters. The engine oil level must be checked
and the oil should be changed regularly
according to the Maintenance Schedule.
Use the oil quantities indicated below only
as guidelines when changing the engine oil.
After changing the oil, make sure the oil is
at the required level.
Failure to use Cummins-recommended
engine oil could result in engine or DPF
breakdown, or in poor fuel efficiency.
Vehicle Care
Engine oil change precaution:
When adding oil, remove the dipstick.
After adding oil, wait for at least
5 minutes before starting the engine. Be
sure to reinstall the dipstick.
Discarded Parts, Oils and Other Liquids
When changing oils, filters, engine coolant
or other liquids, be sure to have a container
ready in advance for their disposal.
Use methods conforming to legal
requirements for discarding or disposing of
parts, oils, filters or engine coolant after
change or replacement.
Do not dispose of used engine oil, fuel or
any other oil in a careless manner such as
pouring it on the ground, into sewers,
or into streams or bodies of water. Instead,
recycle it by taking it to a used oil collection
facility which may be found in your
community.
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