1998 Oldsmobile Cutlass Owner's Manual - Page 307
1998 Oldsmobile Cutlass Manual
Page 307 highlights
Long Tripmighway Maintenance Schedule 100,000 Miles (166 000 ki 0 Inspect spark plug wires. 1 An Emission Control Service. 0 Replace spark plugs. An Emission Control Service. 0 Change automatic transaxle fluid and filter if the vehicle is mainly driven under one or more these conditions: of - In heavy city traffic wherethe outside temperature regularly reaches 90°F (32°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as foundin taxi, police or delivery service. lf you do not useyour vehicle under any these conditions, the fluid and of filter do not require changing. 150,000 Miles (240 000 km) 0 Drain, flush and refill cooling system (or every months since last service, 60 whichever occurs first). See "Engine Coolant"in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure and neck. Pressure test cap the cooling system and pressure cap. An Emission ControlService. DATE MILEAGE I 7-25