1998 Oldsmobile Silhouette Owner's Manual - Page 400
1998 Oldsmobile Silhouette Manual
Page 400 highlights
1 Long Tripmighway Maintenance Schedule 45,000 Miles (75 000 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 0 Replace passenger compartment air filter. 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE I MILEAGE 50,000 Miles (83 000 km) 0 Change 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°F (32°C)or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. If you do not use your vehicle under any of these conditions, the fluid and filter donot require changing. MILEAGE 7-24