1995 Buick Century Owner's Manual - Page 286

MaintenanceSchedule I 100,000 Miles (166 000 km) - 0Replace spark plugs (2.2L Code 4 engine only). A n Emission Control Sewice. 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"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. Ifyou do not use your vehicle under anyo f these conditions, the fluid and filter do not require changing. I I I DATE SERVICED ACTUAL MILEAGE BY 7-26