Geo 1995 Prizm Owner's Manual page 208

What Kind of Oil to Use
Oils of the proper quality for your vehicle can be
identified by looking for the "Starburst" symbol. The
"Starburst" symbol indicates that the oil has been
certified by the American Petroleum Institute (API), and
is preferred for use in your gasoline engine.
If you change your own oil,
be sure to use oil that 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.
You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
RECOMMENDED SAE VlSCOSlW GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD S
~ ~ ~
----6,
SELECT THE LOWEST
SAE VISCOSITY GRADE OIL FOR THE EX~CVBLY TEMPERATURE RANGE.
HOT
WEATHER
COLD
WEATHER
SAE SW-30
LOOK
FOR M I S
SYMBOL
SAE 1OW-30
PREFERRED
above 0°F
(-WC)
DO NOT USE SAE 2OW-50 OR ANY
OTHER
GRADE OIL NOT RECOMMENDED
6-14