Chevrolet 2007 Monte Carlo Owner's Manual page 312

When to Add Engine Oil
V6 Engine
V8 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 400.
312
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 in the
cross-hatched area. Push the dipstick all the
way back in when you are through.
See Engine
Compartment Overview
on page 308 for the
location of the engine
oil fill cap.