1995 Buick Riviera Owner's Manual - Page 227

Supercharger Oil What Kindof Oil to Use See "Recommended Fluids and Lubricants" the Index in and use only the recommended oil. How to Check and AddOil Check oil only when the engine is cold. Allow the engine to cool two to three hoursafter running. the Unless you are technically qualified and have 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. 1. Remove the wiring harness shield. 2. Clean the area around theoil fill plug before removing it. 3. Remove the oil fill plug using a 3/16-inch Allen wrench. 4. The oil level is correct whenit just reaches the bottom of the threads of the inspection hole. 5. Replace the oil plug with the O-ring in place. Torque to 88 lb in (10 N-m). 6. Replace the wiring harness shield. 6-18