1995 Buick Riviera Owner's Manual - Page 288

I MaintenanceSchedule I I 50,000 Miles (83 000 km) 0Change automatic transaxle fluid and filter if the vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90 O F (32 O C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. I f you do not use your vehicle under any of these conditions, the fluid and filter do not require changing. 48,000 Miles (80 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. Lubricate the suspension and steering linkage, transaxle shift linkage, parlung brake cable guides and the underbody contact points and linkage (or every 6 months, whichever occurs first). I DATE I ACTUALMILEAGE ~ r SERVICED BY: 1 7-15