1997 Buick Riviera Owner's Manual - Page 322

I Short Trip/City Maintenance Schedule I 15,000 Miles (25 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 12,000 Miles (20 000 km) Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Lubricate chassis components (or every 6 months, whichever occurs first). (See footnote#.) 0Rotate tires. See "Tire Inspection and Rotation'' in the Indexfor proper rotation pattern and additional information. (See footnote+.) 0Inspect air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. An Emission Control Service. (See footnote-f..) DATE ACTUAL MILEAGE SERVICED BY: DATE MILEAGE ACTUAL SERVICED BY: I I I I 7-9