1999 Buick Riviera Owner's Manual - Page 310

yellowblue Short Trip/City Scheduled Maintenance 3,000 Miles (5 000 km) An Emission Control Service. j Change engine oil and filter (or every 3 months, whichever occurs first). j Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. j Lubricate chassis components (or every 6 months, whichever occurs first). (See footnote #.) j Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED BY: 6,000 Miles (10 000 km) DATE ACTUAL MILEAGE SERVICED BY: 9,000 Miles (15 000 km) An Emission Control Service. j Change engine oil and filter (or every 3 months, whichever occurs first). 12,000 Miles (20 000 km) An Emission Control Service. DATE ACTUAL MILEAGE SERVICED BY: j Change engine oil and filter (or every 3 months, whichever occurs first). 7-8 DATE ACTUAL MILEAGE SERVICED BY: