1997 Buick Skylark Owner's Manual - Page 327

1, Long TriplHighway Maintenance .Schedule I 22,500 Miles (37 500 km) 0Change engineoil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 30,000 Miles (50 000 km) 0Change engineoil and filter (or every 12 months, whichever occurs first). An Emission Control Service. C Lubricate l chassis components (or every 12 months, whichever occurs first). (See footnote#.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote+.) 0Lubricate chassis components (or every 12 months, whichever occursfirst). (See footnote#.) 0, Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote+.) (Also see footnote++.) . . . DATE MILEAGE ACTUAL SERVICED BY: 7-30