1996 Buick Park Avenue Owner's Manual - Page 355

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°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. If you do not use your vehicle any of these undeT conditions, the fluid andfilter do require changing. not I DATE ACTUAL MILEAGE SERVICED BY: 7-37