2011 Buick Regal Oil Type & Capacity
The 2011 Buick Regal oil type depends on the engine: the CXL takes 5W-30 (5.0 quarts qt with filter); the CXL Turbo, Automatic takes 5W-30 (6.0 quarts qt with filter); the CXL Turbo, Standard takes 5W-30 (6.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- CXL: 5W-30, 5.0 quarts with filter
- CXL Turbo, Automatic: 5W-30, 6.0 quarts with filter
- CXL Turbo, Standard: 5W-30, 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| CXL — 2.4L Eng | API - SAE 5W-30 | 5.00 QTS. | — | 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. |
| CXL Turbo, Automatic — 2.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | 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. |
| CXL Turbo, Standard — 2.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | 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. |
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More factory specs & repair guides for your Regal
🛞 2011 Buick Regal Tire Size & Pressure →🌧️ 2011 Buick Regal Wiper Blade Sizes →💡 2011 Buick Regal Light Bulb Sizes →📖 2011 Buick Regal Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.5 quarts (7.09 L) — 50/50 mixture of DEX-COOL and clean, drinkable water
Frequently asked questions
What type of oil does a 2011 Buick Regal take?
It depends on the engine: CXL uses 5W-30; CXL Turbo, Automatic uses 5W-30; CXL Turbo, Standard uses 5W-30.
What is the oil capacity of a 2011 Buick Regal?
Oil capacity depends on the engine: CXL holds 5.0 quarts with filter; CXL Turbo, Automatic holds 6.0 quarts with filter; CXL Turbo, Standard holds 6.0 quarts with filter.
How often should I change the oil in my 2011 Buick Regal?
Most 2011 Buick Regal owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Buick recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2011 Buick Regal?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2011 Buick Regal. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.