Chevrolet Aveo 2007 Owner's Manual page 280

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 an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both provide
easier cold starting and better protection for
the engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM
Standard GM6094M are all you need for good
performance and engine protection.
When to Change Engine Oil
If any one of these is true for you, use the short
trip/city maintenance schedule:
•
Most trips are less than 5 miles (8 km). This is
particularly important when outside
temperatures are below freezing.
•
Most trips include extensive idling, such as
frequent driving in stop-and-go traffic.
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•
You frequently use a carrier on top of
your vehicle.
•
The vehicle is used for delivery service,
police, taxi, or other commercial application.
Driving under these conditions causes engine oil
to break down sooner. If any one of these is
true for your vehicle, you need to change the oil
and filter every 3,000 miles (5 000 km) or
3 months, whichever occurs first.
If none of them is true, use the long trip/highway
maintenance schedule. Change the oil and
filter every 7,500 miles (12 500 km) or 12 months,
whichever occurs first. Driving a vehicle with a
fully warmed engine under highway conditions will
cause engine oil to break down slower.