1998 Buick Regal Owner's Manual - Page 347

1 MaintenanceSchedule 0 Inspect spark plug wires. I - 100,000 Miles (166 000 km) An Emission Control Service. 0 Replace spark plugs. An Emission Control Service. 0 Change automatic transaxle fluid filter if the vehicle is mainly driven and under one or more these conditions: of - In heavy city traffic where the outside temperatureregularly 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. I f you do not use your vehicle under any of these conditions, the fluid and filter do not require changing. DATE ACTUAL MILEAGE 1 SERVICEDBY: 150,000 Miles (240 000 km) 0 Drain, flush and refill cooling system (orevery 60 months since last service, whichever occurs first).See "Engine Coolant" in the Index for what to use. Inspect hoses. Cleanradiator, condenser, pressure capand neck. Pressure test the cooling system and pressure cap. An Emission Control Service. I DATE 7-13