1996 Buick Roadmaster Owner's Manual - Page 323

0Change automatic transmission 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 90O 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 your vehicle under any of these use conditions, thefluid andfilter do require changing. not DATE ACTUAL MILEAGE SERVICED BY: 7-37