SAE IOW-30 is the viscosity grade recommended for
your vehicle. However, you can use SAE 5W-30
if
it's going to be colder than 60°F
(1
6°C) before your next
oil change. When it's very cold, colder than 0°F
(-18"C), you should use an SAE 5W-30 oil. These
numbers on an oil container show its viscosity, or
thickness.
Do
not use other viscosity grade oils, such as
SAE 1OW-40 or SAE 2OW-50 under any conditions.
Notice:
Use only engine oil with the American
Petroleum Institute Certified For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below
-20°F
(-29"C), it is
recommended that you use either and SAE
5W-30 synthetic oil or and SAE
OW-30
oil. Both will
provide easier cold starting and better protection for your
engine at extremely low temperatures.
Engine
Oil
Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for
good performance and engine protection.
When
to
Change Engine Oil
(GM
Oil
Life SystemTM)
Your vehicle has a computer system that lets you know
when to change the engine oil and filter. This is
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an
oil
change is
necessary. A CHANGE
OIL
SOON
light will come on.
Change your oil as soon as possible within the next two
times you stop for fuel. It is possible that,
if
you are
driving under the best conditions, the oil life system may
not indicate that an oil change is necessary for over a
year. However, your engine oil and filter must be
changed at least once a year and at this time the system
must be reset. It is also important to check your oil
regularly and keep it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles
(5
000
km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
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