1998 Buick Skylark Owner's Manual - Page 312

Uses such as found in taxi, police or delivery service. I you do not use your vehicle under any of these conditions, thefluid and f filter do not require changing. - 52,500 Miles (87 500 km) 0 Change engine oil and filter (or every 12 months, whichever occursfirst). An Emission Control Service. 0 Lubricate chassis components (or every months, whichever occursfirst). 12 (See footnote #.) Rotate tires. See "Tire Inspection and Rotation" the Index for proper in rotation pattern and additional information. (See footnote +.) + DATE I ACTUAL MILEAGE SERVICED BY: 60,000 Miles (100 000 km) Change engineoil and filter (or every 12 months, whichever occurs first). An Emission Control Service. Lubricate chassis components (or every months, whichever occurs first). 12 (See footnote #.) 0 Rotate tires. See "Tire Inspection and Rotation" the Index for in proper rotation pattern and additional information. (See footnote +.) (Also see footnote ++.) (Continued) DATE 7-25