The 2007 Buick Lucerne takes SAE 5W-30 motor oil, and the engine holds about 5 quarts with a filter.
In practice, the Lucerne's 3.8-liter V6 uses 5W-30 and can run with conventional, synthetic-blend, or full synthetic oil that meets API standards. Check the owner's manual for exact capacity, interval, and any climate-related recommendations.
Oil specifications and options
Common oil choices that work with the 2007 Lucerne's 3.8L V6 are:
- Conventional 5W-30 motor oil: A budget-friendly option that meets the API ratings suitable for this era and is adequate for normal driving in moderate climates.
- Synthetic-blend 5W-30 motor oil: A middle-ground choice offering better protection and temperature stability without the full cost of synthetic oil.
- Full synthetic 5W-30 motor oil: Provides the highest level of protection and performance, especially in extreme temperatures or demanding driving scenarios.
Any of these 5W-30 options will work as long as they meet the API/ILSAC specs recommended by GM for this model year. Dexos1 certification is not required for 2007 Lucerne, though many Dexos1-certified oils are compatible and commonly used.
Capacity and maintenance
Before draining the oil, consult the owner's manual for the exact capacity and recommended service interval. The Lucerne typically takes about 5 quarts of oil with a filter; use a compatible filter as well.
- Warm up the engine briefly, then turn it off and ensure the vehicle is on a level surface.
- Drain the old oil by removing the drain plug and allow the oil to completely drain.
- Remove and replace the oil filter with a new one, ensuring a proper seal.
- Refill with the correct amount of oil, then replace the filler cap.
- Start the engine, run for a minute, turn off, and recheck the oil level with the dipstick; add more if necessary.
Regular oil changes per GM's maintenance schedule help protect the engine; synthetic oil may extend intervals under certain conditions. Always follow the manual for exact timing based on climate and driving style.
Quick verification tips
To confirm you’re using the right oil, check the owner’s manual, the oil fill cap, and the vehicle’s dipstick for the recommended viscosity (5W-30) and any specific API/ILSAC ratings. If in doubt, contact a GM dealer or trusted mechanic.
Summary
In short, the 2007 Buick Lucerne uses 5W-30 motor oil, typically about 5 quarts with a filter. You can choose conventional, synthetic-blend, or full synthetic oil that meets API standards, and you should verify exact capacity and change intervals in the owner's manual, taking climate and driving conditions into account.