Chevrolet Cruze Owner's Manual page 276

10-14 Vehicle Care
may use substitute engine oil that
meets ACEA C3 of the appropriate
viscosity grade.
Caution
Use only engine oil that is
approved to the dexos2
specification or equivalent engine
oil as defined in the preceding
paragraph. Failure to use the
recommended engine oil can
result in engine damage not
covered by the vehicle warranty.
Viscosity Grade
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-30 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.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. The
recommended oils with the dexos
specification and displaying the
dexos certification mark are all that
is needed for good performance and
engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty.
What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on