1995 Buick Skylark Owner's Manual - Page 278

I MaintenanceSchedule I I - When doing frequent trailer towing. - Uses such as found in taxi, police or 100,000 Miles (166 000 km) 0Replace spark plugs (2.3L Code D engine only). An Emission Control Service. 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. delivery service. I f you do not use your vehicle under any of these conditions, the fluid andfilterdo not require changing. ACTUAL MILEAGE DATE SERVICED BY: