Buick Century Engine Oil Capacity: All Years & Engines

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The Buick Century was produced from 1997 to 2005 as a mid-size sedan equipped with a 3.1L V6 engine. Using the correct oil capacity, viscosity, and type is essential for maintaining engine performance and longevity. This guide provides complete oil specifications and maintenance recommendations for all model years.​

Understanding proper engine oil specifications ensures optimal lubrication, reduces wear, and extends engine life. The Buick Century requires specific oil volumes and viscosity grades to maintain proper operation under various driving conditions.​

2005 Buick Century Engine Oil Capacity

The 2005 Buick Century uses a 3.1L V6 engine that requires 4.5 quarts of full synthetic oil with the filter. Using SAE 5W-30 oil provides optimal protection and efficiency under normal driving conditions.​

2004 Buick Century Engine Oil Capacity

The 2004 Buick Century with the 3.1L V6 engine requires 4.5 quarts of SAE 5W-30 full synthetic oil when changing the filter. This engine code LG8 produces 175 horsepower and benefits from regular oil changes at 7,500-mile intervals.​​

2003 Buick Century Engine Oil Capacity

The 2003 Buick Century operates with 4.5 quarts of SAE 5W-30 synthetic oil including the filter change. The 3.1L V6 engine delivers reliable performance when maintained with proper oil specifications.​

2002 Buick Century Engine Oil Capacity

The 2002 Buick Century with the LG8 engine code requires 4.5 quarts of 5W-30 synthetic oil with filter replacement. This naturally aspirated V6 provides 175 horsepower at 5,200 RPM with proper lubrication.​

2001 Buick Century Engine Oil Capacity

The 2001 model requires 4.5 quarts of SAE 5W-30 full synthetic oil when performing a complete oil and filter change. Maintaining the recommended viscosity ensures proper engine protection across temperature ranges.​

2000 Buick Century Engine Oil Capacity

The 2000 Buick Century uses a 3.1L V6 that requires 4.5 quarts of SAE 5W-30 oil with the filter. This model year transitioned engine specifications while maintaining consistent oil capacity requirements.​

1999 Buick Century Engine Oil Capacity

The 1999 Buick Century operates with 4.5 quarts of 5W-30 synthetic blend oil including filter replacement. The 3.1L engine delivers 160 horsepower with proper maintenance intervals.​

1998 Buick Century Engine Oil Capacity

The 1998 Buick Century requires 4.5 quarts of SAE 5W-30 oil when performing an oil and filter change. Using quality oil filters like AC Delco PF47E ensures proper filtration and engine protection.​

1997 Buick Century Engine Oil Capacity

The 1997 Buick Century with the 3.1L V6 engine uses 4.5 quarts of 5W-30 oil with filter. This first year of the generation established the oil specifications that remained consistent through 2005.​

Oil Maintenance & Service Tips

Regular oil changes protect the Buick Century engine from premature wear and maintain optimal performance. The oil life monitoring system in 2004 and newer models alerts owners within 600 miles of a scheduled oil change. Always change the oil and filter at least once per year, even if the mileage interval has not been reached.​

Check engine oil levels regularly using the dipstick to ensure proper lubrication between service intervals. When performing oil changes, replace the oil filter with quality parts like AC Delco PF47E to maintain proper filtration. Torque the oil drain plug to 18 lb-ft to prevent leaks and avoid overtightening.​

Full synthetic oil provides superior protection in extreme temperatures and extends engine life compared to conventional oil. For high-mileage vehicles over 75,000 miles, using high-mileage synthetic oil formulations helps reduce oil consumption. Always dispose of used oil properly at designated recycling centers.​

Normal vs. Severe Driving Conditions

Severe driving conditions include frequent short trips under 10 miles, extensive idling, dusty environments, and trailer towing.​

FAQs

What kind of oil does a Buick Century use?

The Buick Century uses SAE 5W-30 motor oil, with full synthetic recommended for 2001-2005 models and synthetic blend acceptable for 1997-2000 models. Always use oil meeting GM6094M specifications for optimal engine protection.​

How much oil does a Buick Century take?

A Buick Century takes 4.5 quarts (4.3 liters) of engine oil when changing the oil filter. Without the filter, the capacity is 4.0 quarts (3.8 liters).​

What is the recommended oil type for a Buick Century?

The recommended oil type for a Buick Century is SAE 5W-30 full synthetic for 2001-2005 models. Earlier 1997-2000 models can use synthetic blend or full synthetic oil.​

What is the oil change interval for a Buick Century?

The oil change interval for a Buick Century is every 7,500 miles or 12 months under normal driving conditions. The oil life monitoring system calculates the optimal interval based on driving habits and conditions.​

What oil filter fits a Buick Century?

The AC Delco PF47E or PF47 oil filter fits all Buick Century models from 1997-2005. Alternative compatible filters include Mobil 1 M1-110A and Fram PH3593A.​

What is the oil drain plug torque for a Buick Century?

The oil drain plug torque for a Buick Century is 18 lb-ft (24 N·m). Hand tightening followed by a quarter turn with a wrench prevents overtightening and thread damage.​

Conclusion

The Buick Century requires 4.5 quarts of SAE 5W-30 engine oil with filter across all model years from 1997 to 2005. Using manufacturer-approved full synthetic or synthetic blend oil ensures proper lubrication and engine protection. Following the recommended 7,500-mile oil change interval and using quality filters like AC Delco PF47E maintains engine reliability and performance throughout the vehicle’s life.​