Chevrolet 2007 Silverado 1500 Pickup Owner's Manual page 483

When to Add Engine Oil
All Except 8.1L Engine
8.1L Engine
If the oil is below the cross-hatched area at the tip
of the dipstick, you will 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 607.
Notice: Do not add too much oil. If the engine
has so much oil that the oil level gets above
the cross-hatched area that shows the proper
operating range, the engine could be damaged.
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.
See Engine
Compartment Overview
on page 476 for the
location of the engine
oil fill cap.
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