You’re A Mechanic If You Can Pass This Essential Car Maintenance Quiz
Which of the following engine oil grades would be great for an old car?
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As a general rule of thumb, the bigger the number on the grade of engine oil, the thicker it is. Older engines need thicker oil as the clearances between piston rings and cylinders have increased due to wear.
Which of the following engine oil grades would be great for an old car?
- 10W-30
- 20W-50
- 5W-30
- 0W-20
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