1995 Buick Century Owner's Manual - Page 275

I Maintenance Schedule I I 50,000 Miles (83 000 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 outside temperature regularly reaches 90°F (32O C) or higher. In hilly or mountainous terrain. When doing frequenttrailer towing. Uses such as found in taxi, police or delivery service. u y o u do not use your vehicle under anyof these conditions, the .fluid and filter do not require changing. 48,000 Miles (80 000 km) 0Change engine oiland filter (or every 3 months, whichever occurs first). A HEnzission Control Service. 0Lubricate the transaxle shift linkage, parking brake cable guides, underbody contact points and linkage. If equipped with grease fittings, lubricate the suspension and steering linkage (or every 6 months, whichever occurs first). I DATE I ACTUAL MILEAGE ISERVICED BY: I