Buick 2007 Rainier, Owner'S Manual, Page: 480 / 534

If the engine oil life system is ever reset
accidentally, you must service your vehicle within
3,000 miles (5 000 km) since your last service.
Remember to reset the oil life system whenever
the oil is changed. See
Engine Oil Life System on
page 372 for information on the Engine Oil Life
System and resetting the system.
When the CHANGE ENGINE OIL DIC message
appears, certain services, checks, and inspections
are required. Required services are described
in the following for “Maintenance
I ” and
“Maintenance
II
.” Generally, it is recommended
that your first service be Maintenance I , your
second service be Maintenance
II
, and that you
alternate Maintenance I and Maintenance II
thereafter. However, in some cases,
Maintenance
II
may be required more often.
Maintenance I — Use Maintenance I if the
message comes on within 10 months since the
vehicle was purchased or Maintenance
II
was performed.
Maintenance II — Use Maintenance II if the
previous service performed was Maintenance I .
Always use Maintenance
II
whenever the message
comes on 10 months or more since the last
service or if the message has not come on at all
for one year.
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