Vehicle Questions and Answers
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In the 2008 Ford Focus, the oil drain plug requires a 16 mm head. Ensuring top-quality oil is crucial for maintaining the engine's performance. Issues with the oil are inevitable, often signaled by a strong burning smell. Prompt attention to this matter is essential to prevent potential dangers like engine explosion. Poor-quality oil can lead to engine failure, evidenced by knocking sounds and reduced gas mileage. Regular oil changes, ideally every 5,000 to 10,000 miles, are recommended to avoid engine complications stemming from neglecting this maintenance task.
Thread thickness. American/metric: 21 millimeters diameter.