Buick 1993 Century Owner's Manual page 297

Section
E:
Maintenance Record
After the scheduled services are performed, record the
date, odometer reading and who performed the service in
the columns indicated. When completing the
Maintenance Performed column, insert the numbers from
the Schedule I or Schedule 1 1 maintenance charts which
correspond to the maintenance performed. Also, you
should retain all maintenance receipts. Your owner
information portfolio is a convenient place to store them.
DATE
ODOMETER
READING
SERVICED BY MAINTENANCE PERFORMED
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