Engine Oil Life System - Chevrolet Impala 2007 Owner's Manual

Engine Oil Life System

When to Change Engine Oil
Your vehicle has a computer system that lets you
know 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
will be indicated can vary considerably. For the oil
life system to work properly, you must reset the
system every time the oil is changed.
When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A CHANGE ENGINE OIL SOON
message will come on. See DIC Warnings
and Messages on page 199.
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Change the oil as soon as possible within the next
600 miles (1 000 km). It is possible that, if you
are driving under the best conditions, the oil
life system might not indicate that an oil change is
necessary for over a year. However, the engine
oil and filter must be changed at least once a year
and at this time the system must be reset. Your
dealer/retailer has trained service people who
will perform this work using genuine parts
and reset the system. It is also important to check
the oil regularly and keep it at the proper level.
If the system is ever reset accidentally, you must
change the oil at 3,000 miles (5 000 km) since
your last oil change. Remember to reset the oil life
system whenever the oil is changed.