1996 Pontiac Bonneville Owner's Manual - Page 264

Supercharger Oil Unless you are technically qualified and have the proper tools, you should let your dealeror a qualified service center perform this maintenance. How to Check and Add Oil Check oil only when the engine is cold. the Allow engine to cool two to three hours after running. If you remove the supercharger oil plug while fill the engineis hot, pressure may cause hot oilto blow outof the oil fill hole. may be burned. You Do not remove the plug until the engine cools. 1. Remove the wiring harness shield. When to Check Check oil level every 30,000 miles (50 000 km) or every 36 months, whichever occurs ,first. 2. Clean the area around the fill plug before oil removing it. What Kind of Oil to Use 3. Remove theoil fill plug using a Torx@ drive. 4. The oil level is correct when just reaches the it bottom of the threads of the inspection hole. See "Recommended Fluids and Lubricants" in the Index 5. Replace the ol plug with the O-ring in place. Torque i and use only the recommended oil. to 88 lb-in (10 N-m). 6 . Replace wiring harness shield.