Chevrolet Aveo 2007 Owner's Manual page 278

Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
See Engine Compartment Overview on page 276
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several
minutes to drain back into the oil pan. If you
do not do this, the oil dipstick might not
show the actual level.
2. Pull the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down
and check the level.
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When to Add Engine Oil
If the oil is below the MIN (minimum) mark on the
dipstick, you need to add at least one quart/liter
of oil. But you must use the right kind. This section
explains what kind of oil to use. For engine oil
crankcase capacity, see Capacities and
Specifications on page 368.
Notice: Do not add too much oil. If the engine
has so much oil that the oil level gets above
the upper mark that shows the proper
operating range, the engine could be damaged.
See Engine Compartment Overview on page 276
for the location of the engine oil fill cap.
Be sure to add enough oil to put the level
somewhere in the proper operating range. Push the
dipstick all the way back in when you are through.