1996 Buick Riviera Owner's Manual - Page 332

-Long Trip/Highway MaintenanceSchedulr ' 82,500 Miles (137 500 km) 0Change engineoil and filter (or every 12 months, whichever occursfirst). An Emission Control Service. 90,000 Miles (150 000 km) 0Change engineoil and filter (or every 12 months, whichever occurs. first). An'Emissiovl Control Service. 0Lubricate the suspension and steering linkage, transaxle shift linkage, parking brake cable guides the underbody and contact points and linkage (or every 12 months, whichever occurs first). 0Rotate tires, See."Tire Inspection and Rotation'' in the Index for proper rotation pattern and additional information. Lubricate the suspension steering and ,linkage, transaxle shift linkage, parking br.ake cable guides and the underbody (or contact points and linkage every 12 m.onths, whichever occurs first). Replace air cleaner filter. Emission Control An Service. DATE ACTUAL MILEAGE SERVICED B E , (Continued) 7-33