Buick Century Engine Oil Specs
Engine oil type, capacity & service interval for the Buick Century (2000–2005). Select your year below for full specifications.
Select Year – Buick Century Engine Oil
6 years foundBuick Century Engine Oil Specs by Year
All 6 years| Year | Engine | Oil Grade | Capacity | Interval | |
|---|---|---|---|---|---|
| 2005 | 3.1L 6-Cylinder | 5W-30 | 6.0 qt | 5,000 mi | View → |
| 2004 | 3.1L 6-Cylinder | 5W-30 | 4.2 qt | 5,000 mi | View → |
| 2003 | 3.1L 6-Cylinder | 5W-30 | 6.0 qt | 5,000 mi | View → |
| 2002 | 3.1L 6-Cylinder | 5W-30 | 4.5 qt | 7,500 mi | View → |
| 2001 | 3.1L 6-Cylinder | 5W-30 | 4.5 qt | 5,000 mi | View → |
| 2000 | 3.1L 6-Cylinder | 5W-30 | 6.0 qt | 5,000 mi | View → |
Buick Century Engine Oil Guide
The Buick Century was produced from 2000 to 2005. This model typically uses 5W-30 full synthetic engine oil — a specification common to most Buick Cen-series vehicles.
Selecting the correct oil viscosity for your Buick Century is essential. Using a grade that is too thin reduces protection at operating temperature, while too thick an oil impairs cold-start flow and reduces fuel economy. Always match the exact grade shown for your specific model year.
The recommended oil change interval for the Buick Century is every 5,000 miles or 6 months. Under severe driving conditions — track use, towing, or frequent cold starts — shorten this interval by 25–30%.
When servicing your Buick Century, always replace the oil filter at every oil change. Using a quality filter — such as the Mann or Mahle filters specified for Buick engines — ensures proper oil pressure and prevents unfiltered oil from circulating through the engine.
Oil change costs for the Buick Century at a US dealership or independent European specialist typically range from $120 to $200 for a full synthetic service. DIY oil changes cost approximately $60–$90 in parts (oil + filter) and take about 30 minutes with the right tools.
Always consult your vehicle's owner's manual to confirm the exact specification for your specific trim and engine variant, as some Buick Century configurations may have different requirements.
Buick engines require BMW Longlife-approved full synthetic oil. Using non-approved conventional oil can damage the variable valve timing (VANOS) system and void your warranty.
Buick engines may consume small amounts of oil between services. Check the oil level via the iDrive display or dipstick every 1,000 miles to avoid running low, especially in older models.