2001 Buick Regal Owner's Manual - Page 273

6. Remove the air inlet grille. 7. Remove the passenger compartment air filter. 8. Then replace the old air filter with the new one. For the type of filter to use, see "Normal Maintenance Replacement Parts" in the Index. 9. Reposition the air inlet grille. 10. Reinstall the air inlet grille retainers. 11. Reattach the hood weatherstrip. 12. Reconnect the windshield washer pump hose to the fender rail and air inlet grille. 13. Close the hood. 14. Return the windshield wipers to the park position. Supercharger Oil Unless you are technically qualified and have the proper tools, you should let your dealer or a qualified service center perform this maintenance. When to Check Check oil level every 30,000 miles (50 000 km) or every 36 months, whichever occurs first. What Kind of Oil to Use Use only the recommended supercharger oil. See "Recommended Fluids and Lubricants" in the Index. 6-22