Buick 1995 Century Owner's Manual page 266

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Maintenance Schedule I
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3,000 Miles (5 000 km)
The services shown in this schedule up to 100,000 miles
(1 66 000 krn) should be performed after 100,000 miles
(1 66 000 km) at the same intervals.
Footnotes
-i- The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to the
completion of vehicle useful life. We, however, urge that
all recommended maintenance services be performed at
the indicated intervals and the maintenance be recorded.
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An
Emission Contrul Service.
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DATE
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ACTUAL MILEAGE
SERVICED
B Y
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7-6