What's the 2006 buick lucerne engine oil type?

As indicated by the factory requirements, the manufacturer states that the oil form for the 2006 Buick Lucerne is SAE 5w-30. The oil capacity of the car's engine iS4.5 quarts or 4.3 liters and is the prescribed quantity to be used for its service interval when replacing the oil and oil filter. When choosing oil for the car, make sure that it is the right kind, but also look for the API certification seal because it assures You that the oil is licensed for use in all Buick-made vehicles. When changing the fuel, You can use traditional or synthetic oil, but know that conventional is not an efficient engine lubricant compared to synthetic, and it will need to be adjusted more often. You will have to adjust the oil every 3500 miles for traditional and You will have to make a new oil and filter every 5500 to 7000 miles for full synthetic.