2007 Chevrolet Malibu Owner's Manual - Page 358

When to Add Engine Oil If the oil is below the MIN mark for the L4 engine or below the cross-hatched area at the tip of the dipstick for the V6 engine, 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 455. Notice: Do not add too much oil. If the engine has so much oil that the oil level gets above the upper mark that shows the proper operating range, the engine could be damaged. See Engine Compartment Overview on page 352 for the location of the engine oil fill cap. L4 Engine V6 Engine 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. 358