1995 Buick Regal Owner's Manual - Page 303

Maintenance ScheduleI1 100,000 Miles (166 000 km) 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 oulside temperature regularly reaches 90 F (32 O C) or higher. - In hilly or mountainous terrain. O - 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 o f these conditions, the.fluid and filter do not require changing. DATE ACTUAL MILEAGE SERVICED BY. 7-35