What Kind Of Engine Oil To Use - GMC Sierra 2000 Owner's Manual

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.
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:
If you change your own oil,
be sure you use oil that has
the starburst symbol on the
front of the oil container.
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