1998 Buick Riviera Owner's Manual - Page 334

0 Lubricate chassis components (or every months, whichever occurs first). 12 (See footnote #.) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index proper for rotation pattern andadhtional information. (See footnote+.) 45,000 Miles (75 000 km) 0 Change engineoil and filter (or every 12 months, whichever occurs first). An Emission Control Service. I7 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 0 Rotate tires. See "Tire Inspection and Rotation" the Index for proper in rotation pattern and additional information. (See footnote +.) DATE I 50,000 Miles (83 000 km) 0 Change automatic transaxle fluid and if the vehicle is mainly driven filter under one or more these conditions: of - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. - In hilly or mountainous terrain. I DATE I ~ ACTUAL MILEAGE I SERVICEDBY: I I (Continued) 7-25