1996 Buick Riviera Owner's Manual - Page 328

Long Trip/Highway Maintenance Schedule 37,500 Miles (62 500 km) 0Change engine oil and filter(or every 12 months, whichever occurs first). An Emission Control Sewice. . 45,OOO'Miles(75 000 km) 0Change engineoil and filter (or 'every 12 months, whichever occurs first). An Emission Control Service. 0Lubricate the suspension steering and linkage, transaxle shift linkage, parking brake cable guides, and the underbody contact points and linkage (or every 12 months, whichever occurs first). Rotate'tires.See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. Lubricate the suspension and steering linkage, transaxle shift linkage, parkmg brake cable guides and the underbody every contact points and linkage (or 12 months, whichever occurs first). v DATE ACTUAL MILEAGE SERVICED B E DATE ACTUAL MILEAGE SERVICED BY: 7-29