Buick 2007 Rendezvous - Manual (Page 366)

When to Add Engine Oil
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 469.
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.
See Engine
Compartment
Overview on page 364
for the location of the
engine oil fill cap.
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.
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