What Kind Of Engine Oil To Use - GMC SIERRA 2002 Manual

The engine oil fill cap for the VORTEC 4800, 5300 and
6000 V8 engines is located on the engine valve cover on
the passenger's side of the vehicle. On the 8100 engine,
the oil fill cap is located on the front of the engine. See
"Engine Compartment Overview" in the Index for more
information on location.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.
6-16
Your vehicle may have a
cap with text and a graphic,
or just a graphic as shown.

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 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. If
you have your oil changed
for you, be sure the oil put
into your engine is
American Petroleum
Institute certified for
gasoline engines.