Buick LaCrosse
Data verified by Nick Marchenko, PhD
Maintaining the engine oil in your Buick LaCrosse is crucial for optimal performance and longevity. The LaCrosse, produced from 2005 to 2019, offers a variety of engine options, including the 3.8L V-6 (L26), 2.4L I-4 (LAF and LUK), and several 3.6L V-6 variants (LFX, LGX, LLT, LY7). Depending on the engine, oil capacities range from 4.5 quarts for the L26 models to 6 quarts for the LFX and LGX engines, all requiring a viscosity of 5W-30.
In addition to oil capacity, it's important to consider coolant volumes, which vary by engine type, with the largest being 13.3 quarts for the LS4 engine. Regular oil changes, typically every 5,000 to 7,500 miles, help maintain engine health and efficiency. Always refer to your owner's manual for specific maintenance schedules and recommendations based on your engine type.
Buick LaCrosse Oil Capacity
| Engine | Oil Capacity | Viscosity | Coolant | Years |
|---|---|---|---|---|
| L26 Buick V6 3800 V6 The L26 engine has a displacement of 3.8L V-6. | 4.5 qt | 5W-30 | 11.2 qt | 2008, 2007 |
| L26 Buick V6 3800 V6 The L26 engine has a displacement of 3.8L V-6. | 4.5 qt | 5W-30 | 11.6 qt | 2006, 2005 |
| L26 Buick V6 3800 V6 The L26 engine has a displacement of 3.8L V-6. | 5.0 qt | 5W-30 | 11.2 qt | 2009 |
| LAF GM Ecotec 2.4 The LAF engine has a displacement of 2.4L I-4. | 5.0 qt | 5W-30 | 7.5 qt | 2011, 2010 |
| LFX General Motors DOHC V6 GM High Feature The LFX engine has a displacement of 3.6L V-6. | 6.0 qt | 5W-30 | 7.5 qt | 2013, 2012 |
| LFX General Motors DOHC V6 GM High Feature The LFX engine has a displacement of 3.6L V-6. | 6.0 qt | 5W-30 | 9.9 qt | 2016, 2015, 2014 |
| LGX General Motors DOHC V6 GM High Feature The LGX engine has a displacement of 3.6L V-6. | 6.0 qt | 5W-30 | 9.5 qt | 2019, 2018, 2017 |
| LLT General Motors DOHC V6 GM High Feature The LLT engine has a displacement of 3.6L V-6. The power output is 304 hp with a torque of 273 lb-ft. | 5.5 qt | 5W-30 | 9.9 qt | 2011, 2010 |
| LS4 Small-Block Engines LS The LS4 engine has a displacement of 5.3L V-8. | 6.0 qt | 5W-30 | 13.3 qt | 2009, 2008 |
| LUK GM Ecotec 2.4 The LUK engine has a displacement of 2.4L I-4. | 5.0 qt | 5W-30 | 10.1 qt | 2016, 2015, 2014, 2013, 2012 |
| LY7 General Motors DOHC V6 GM High Feature The LY7 engine has a displacement of 3.6L V-6. The power output is 255 hp with a torque of 252 lb-ft. | 5.5 qt | 5W-30 | 11.0 qt | 2005 |
| LY7 General Motors DOHC V6 GM High Feature The LY7 engine has a displacement of 3.6L V-6. The power output is 255 hp with a torque of 252 lb-ft. | 5.5 qt | 5W-30 | 11.2 qt | 2008, 2007 |
| LY7 General Motors DOHC V6 GM High Feature The LY7 engine has a displacement of 3.6L V-6. The power output is 255 hp with a torque of 252 lb-ft. | 5.5 qt | 5W-30 | 12.3 qt | 2006 |
Buick LaCrosse – Frequently Asked Questions
How many quarts of oil does the Buick LaCrosse take?
The Buick LaCrosse oil capacity varies by engine: L26: 4.5 qt; L26: 4.5 qt; L26: 5.0 qt; LAF: 5.0 qt; LFX: 6.0 qt; LFX: 6.0 qt; LGX: 6.0 qt; LLT: 5.5 qt; LS4: 6.0 qt; LUK: 5.0 qt; LY7: 5.5 qt; LY7: 5.5 qt; LY7: 5.5 qt. Always confirm the exact capacity for your specific engine before an oil change.
What type of oil does the Buick LaCrosse use?
The Buick LaCrosse uses 5W-30 engine oil across all its engine variants. Full synthetic oil meeting API/ILSAC specifications is strongly recommended for optimal engine protection and performance.
What is the coolant capacity of the Buick LaCrosse?
The coolant capacity for the Buick LaCrosse varies by engine: L26: 11.2 qt; L26: 11.6 qt; L26: 11.2 qt; LAF: 7.5 qt; LFX: 7.5 qt; LFX: 9.9 qt; LGX: 9.5 qt; LLT: 9.9 qt; LS4: 13.3 qt; LUK: 10.1 qt; LY7: 11.0 qt; LY7: 11.2 qt; LY7: 12.3 qt. Use the coolant specification listed in the owner's manual for your engine variant.
What type of oil does the Buick LaCrosse use?
The Buick LaCrosse typically uses 5W-30 viscosity engine oil across its various engine options. It's important to check the owner's manual for specific recommendations based on your engine type.
How many quarts of oil does the Buick LaCrosse take?
The oil capacity for the Buick LaCrosse varies by engine. For example, the 3.8L V-6 (L26) models require 4.5 to 5 quarts, while the 3.6L V-6 engines (LFX, LGX) require 6 quarts.
How often should I change oil in a Buick LaCrosse?
It's recommended to change the oil in your Buick LaCrosse every 5,000 to 7,500 miles, depending on driving conditions and engine type. Always consult your owner's manual for the best maintenance schedule.
What is the coolant capacity of the Buick LaCrosse?
Coolant capacity in the Buick LaCrosse varies by engine. For instance, the LS4 engine has a coolant capacity of 13.3 quarts, while the LAF engine has a capacity of 7.5 quarts.
Does the Buick LaCrosse need synthetic oil?
While synthetic oil is not a requirement for the Buick LaCrosse, it is recommended for better engine performance and protection, especially in extreme temperatures. Always refer to the owner's manual for specific oil recommendations.
What happens if I use the wrong oil viscosity in my Buick LaCrosse?
Using the wrong oil viscosity can lead to inadequate lubrication, increased engine wear, and potential overheating. It's crucial to use the recommended 5W-30 viscosity for optimal performance.
What is an oil life monitor and how does it work?
An oil life monitor is a system that tracks engine conditions and driving habits to estimate when an oil change is necessary. It helps ensure that you change the oil at the right intervals, maximizing engine health.
Can I mix synthetic and conventional oil?
While it is technically possible to mix synthetic and conventional oil, it is not recommended as it can reduce the effectiveness of the synthetic oil. It's best to stick with one type for optimal performance.
How do I know if my Buick LaCrosse has an oil leak?
Signs of an oil leak include puddles of oil under the vehicle, oil spots on the driveway, or a burning oil smell. Regularly checking the oil level can also help identify leaks.
What causes excessive oil consumption?
Excessive oil consumption can be caused by worn piston rings, valve seals, or gaskets. Regular maintenance and oil checks can help identify and mitigate these issues.
Should I check my oil when the engine is hot or cold?
It's best to check your oil when the engine is warm but not hot. This allows the oil to circulate and provide a more accurate reading on the dipstick.
What is the difference between an oil change and a flush?
An oil change involves draining the old oil and replacing it with new oil, while an oil flush cleans out the engine's oil system to remove sludge and deposits. Flushing is generally not necessary unless specified by a mechanic.