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Could you tell me the recommended oil type for a BMW 645Ci?
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★ Top Answer
The recommended oil for a BMW 645ci is 5w-30. It is crucial to ensure your oil is changed periodically, typically every 5,000 to 10,000 miles. Neglecting to replace the oil can lead to engine issues, such as a burning smell, which should be addressed promptly to prevent any potential hazards like an engine failure. Using old or low-quality oil may result in engine malfunctions, including knocking noises and poor fuel efficiency. Therefore, it is essential to use top-notch oil to maintain the smooth operation of the engine.
More answers
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For a 2005 BMW 6 Series 645Ci, it is advised to use 5W-30 full synthetic motor oil.
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