Engine Oil Life System; When To Change Engine Oil - Chevrolet 2011 HHR Owner's Manual

Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from
the filter before disposal. Never dispose of oil by putting
it in the trash or pouring it on the ground, into sewers,
or into streams or bodies of water. Recycle it by taking it
to a place that collects used oil.

Engine Oil Life System

When to Change Engine Oil

This vehicle has the Engine Oil Life System, a computer
system that indicates when to change the engine oil
and filter. This is based on engine revolutions and
engine temperature, and not on mileage. Based on
driving conditions, the mileage at which an oil change is
indicated can vary considerably. For the oil life system
to work properly, the system must be reset every time
the oil is changed.
6-20
When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE OIL SOON message comes on. See DIC
Warnings and Messages on page 4 41. Change the
oil as soon as possible within the next 600 miles
(1 000 km). It is possible that, if driving under the best
conditions, the oil life system might indicate that an oil
change is not necessary for up to a year. The engine oil
and filter must be changed at least once a year and, at
this time, the system must be reset. Your dealer has
trained service people who will perform this work and
reset the system. It is also important to check the oil
regularly over the course of an oil drain interval and
keep it at the proper level.
If the system is ever reset accidentally, the oil must
be changed at 3,000 miles (5 000 km) since the last
oil change. Remember to reset the oil life system
whenever the oil is changed.
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