Chevrolet Cruse 2014 Owner's Manual page 275

Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See
Use and ask for licensed engine oils
®
with the dexos1 approved
certification mark. Engine oils
meeting the requirements for the
vehicle should have the dexos1
approved certification mark. This
certification mark indicates that the
oil has been approved to the dexos1
specification.
Failure to use the recommended
engine oil can result in engine
damage not covered by the
vehicle warranty. Check with your
.
dealer or service provider on
whether the oil is approved to the
dexos1 specification.
SAE 5W-30 is the best viscosity
grade for the vehicle. Do not use
other viscosity grade oils such as
SAE 10W-30, 10W-40, or 20W-50.
Cold Temperature Operation: In an
area of extreme cold, where the
temperature falls below 29°C
( 20°F), an SAE 0W-20 oil may be
used. An oil of this viscosity grade
will provide easier cold starting for
the engine at extremely low
temperatures. When selecting an oil
of the appropriate viscosity grade,
always select an oil of the correct
specification. See Specification
earlier in this section.
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade:
Use and ask for engine oils with the
dexos2 certification mark. Oils
meeting the requirements of the
vehicle should have the dexos2
certification mark on the container.
This certification mark indicates that
the oil has been approved to the
dexos2 specification. If you are
unsure whether the oil is approved
to the dexos2 specification, ask your
service provider.
Use of Substitute Engine Oils if
dexos2 is unavailable: In the event
that dexos2-approved engine oil is
not available at an oil change or for
maintaining proper oil level, you