1997 Buick Park Avenue Owner's Manual - Page 357

I Short TripKity Maintenance Schedule I 33,000 Miles (55 000 km) 0Change engine oil and filter (or every 3 months, whichever occursfirst). An Emission Control Service. (See footnote *.) 0For supercharged engines only: Check the supercharger oil level and add oil as needed (or every 36 months, whichever occurs first). See "Recommended P1uid.s and Lubricants" in this section. An Emission Control Service. (See footnote T.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED B Y 7-13