Pontiac Montana SV6 2007 Owner's Manual page 521

When the CHANGE OIL SOON 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.
Change engine oil and filter. See Engine Oil on page 421. Reset oil life system.
See Engine Oil Life System on page 424. An Emission Control Service.
Lubricate chassis components. See footnote #.
Visually check for any leaks or damage. See footnote (k).
Inspect engine air cleaner filter. If necessary, replace filter. See Engine Air
Cleaner/Filter on page 426. See footnote (g).
Rotate tires and check inflation pressures and wear. See Tire Inspection and
Rotation on page 469 and "Tire Wear Inspection" in At Least Once a Month on
page 527.
Inspect brake system. See footnote (a).
Maintenance I — Use Maintenance I if the
CHANGE OIL SOON 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.
Scheduled Maintenance
Service Maintenance I Maintenance II
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