Pontiac Vibe 2003 Owner's Manual page 237

What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the starburst symbol.
This symbol indicates that the oil has been certified by
the American Petroleum Institute (API). Do not use
any oil which does not carry this starburst symbol.
You should also use the proper viscosity oil for your
vehicle, as shown in the viscosity chart.
If you choose to perform the
engine oil change service
yourself, be sure the oil you
use has the starburst
symbol on the front of the
oil container. If you have
your oil changed for you, be
sure the oil put into your
engine is American
Petroleum Institute certified
for gasoline engines.
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