1997 Buick Regal Owner's Manual - Page 354

I Short TripKity Maintenance Schedule I 30,000 Miles (50 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) 0Replace air cleaner filter. An Emission Control Service. 27,000 Miles (45 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) 0Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. (See footnote?.) 0For supercharged engines only: Check the supercharger oil level and add oil as needed (or every 36 months, whichever occurs first). See "Recommended Fluids and Lubricants" in this section. An Emission Control Service. (See footnote?.) DATE ACTUAL MILEAGE SERVICED BY: 7-12