1997 Buick Riviera Owner's Manual - Page 342

1' Long Trip/Highway Maintenance Schedule I 15,000 Miles (25 000 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 22,500 Miles (37 500 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0Lubricate chassis components (or every 12 months, whichever occursfirst). (See footnote#.) 0Rotate tires.See "Tire Inspection and Rotation'' in the Index for proper rotation pattern and additional information. (See footnote+.) 17 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote#.) 17 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote+.) I I I I DATE ACTUAL MILEAGE SERVICED BY: I DATE I ACTUAL MILEAGE ISERVICED BY: I 7-29