Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Buick RegalOil Type & Capacity
OEM spec from the factory service manual for the CXL Turbo, Automatic variant.
Quick Answer
Oil Type
API - SAE 5W-30
Capacity (w/ Filter)
6.00 QTS.
5.67 L
Variant
CXL Turbo, Automatic
Note: Use only engine oil that is approved to the dexos specification or an equivalent engine oil of the appropriate viscosity grade. Engine oils approved to the dexos specification will show the dexos symbol on the container. Failure to use the recommended engine oil or equivalent can result in engine damage.
Use of Substitute Engine Oils if dexos is unavailable for top-up only: Engine oil not meeting the dexos specification or equivalent should not be used for an oil change. In the event that dexos approved engine oil is not available for maintaining proper oil level, however, you may use substitute engine oil displaying the API Starburst symbol and of SAE 5W-30 viscosity grade. Extensive use of oils that do not meet the dexos specification, however, may result in reduced performance or engine damage under certain circumstances.
Source: Factory service manual — 2011 Buick Regal CXL Turbo, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2011 Buick Regal take?
- The 2011 Buick Regal requires API - SAE 5W-30. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the CXL Turbo, Automatic configuration.
- How much oil does a 2011 Buick Regal need?
- The 2011 Buick Regal takes 6.00 QTS. (5.67 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2011 Buick Regal?
- Yes — synthetic oil that meets the API - SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2011 Buick Regal?
- Using oil that does not meet the API - SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.