Engine Oil Additives/Engine Oil Flushes; Selecting The Right Engine Oil; Viscosity Grade; What To Do With Used Oil - Chevrolet Express Owner's Manual

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-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 for more
information.
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.
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 your skin for very long. Clean
your skin and nails with soap and
water, or a good hand cleaner.
Wash or properly dispose of clothing
or rags containing used engine oil.