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What type of oil should be used for the Buick Regal?

1 Answers

VanIsabela

07/29/25 3:29pm

The Buick Regal uses 5W30 engine oil. Compared to 5W40 and 5W30, the low-temperature fluidity is the same, but the high-temperature performance differs. 5W40 has higher viscosity, providing better high-temperature protection and sealing performance. However, the increased viscosity results in greater engine resistance and higher fuel consumption. For the Regal's engine, 5W30 is more suitable. Additional details are as follows: Note 1: Depending on the vehicle configuration, the factory-fill oil for the Buick Regal is either dexos engine oil or engine oil that meets GM6094M or GM4718M standards. When changing the oil, if the engine oil filler cap has the dexos logo, it is recommended to use engine oil with the dexos certification mark. Note 2: The Buick Regal is suitable for engine oil identified by the dexos certification mark. Look for and use engine oil displaying the dexos certification mark with the correct viscosity grade, or engine oil that meets General Motors GM6094M standards and is certified by the American Petroleum Institute (API) with a viscosity grade of SAE5W-30. For vehicles equipped with a Turbo engine, use engine oil that meets General Motors GM4718M standards and is certified by the API with a viscosity grade of SAE5W-30.

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