2005 Buick Allure Oil Type & Capacity
The 2005 Buick Allure takes 5W-30 motor oil — 5.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 5.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| CX — 3.8L Eng | API- SAE 5W-30 | 5.50 QTS. | 4.00 QTS. | GM Standard GM6094M and displays the American Petroleum Institute Certified for Gasoline Engines starburst symbol. |
| CXL — 3.8L Eng | API- SAE 5W-30 | 5.50 QTS. | 4.00 QTS. | GM Standard GM6094M and displays the American Petroleum Institute Certified for Gasoline Engines starburst symbol. |
| CXS — 3.6L Eng | API- SAE 5W-30 | 5.50 QTS. | 5.20 QTS. | GM Standard GM6094M and displays the American Petroleum Institute Certified for Gasoline Engines starburst symbol. |
Buy the right oil
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More specs & repair guides for your Allure
2005 Buick Allure factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
11.7 quarts (11.07 L) — 50/50 mixture of DEX-COOL and clean drinkable water
Frequently asked questions
What type of oil does a 2005 Buick Allure take?
The 2005 Buick Allure takes 5W-30 motor oil (API- SAE 5W-30), per the factory service manual.
How much oil does a 2005 Buick Allure take?
The 2005 Buick Allure holds 5.5 quarts with a filter change, or 4.0 quarts without changing the filter.
Can I use synthetic oil in my 2005 Buick Allure?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2005 Buick Allure. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.