When To Add Engine Oil - GMC 2009 Yukon XL Owner's Manual

When to Add Engine Oil

If the oil is below the cross-hatched area at the tip of the
dipstick, add at least one quart/liter of the recommended
oil. This section explains what kind of oil to use. For
engine oil crankcase capacity, see Capacities and
Specifications on page 5-122.
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.
5-16
Add enough oil to put the level somewhere in the proper
operating range. Push the dipstick all the way back in
when through.
See Engine Compartment
Overview on page 5-14 for
the location of the engine
oil fill cap.