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The 2014 BMW 320i requires 5.75 liters (6.1 quarts) of SAE 5W-30 engine oil, which is a popular synthetic fluid suitable for various engines and climates. This oil is important for preventing corrosion, cooling the engine, and lubricating moving parts. If the oil becomes old, thick, or low, it won't function properly, leading to decreased performance and fuel efficiency. Neglecting oil maintenance can even cause engine damage. While BMW suggests changing the oil every 7,500 miles, the frequency may vary based on your local conditions and driving habits. On average, replacing the oil in a 2014 320i costs between $120 and $140, with labor accounting for $50 to $70 of the total.
The preferred motor oil for the 2014 BMW 320i is synthetic 5W-30 oil.