1997 Buick Regal Owner's Manual - Page 378

Long Tripmighway Maintenance Schedule 90,000 Miles (150 000 km) 0Change engine oil and filter (or every 12 months, whichever occursfirst). An Emission Control Service. (See footnote *.) 0Replace passenger compartment air filter. 0Replace air cleaner filter. An Emission Control Service. 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?.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (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?.) I DATE I ACTUAL MILEAGE SERVICED BY: I