Using Thicker Oil in High Mileage Engines: Is It Beneficial?

Discover if using thicker oil is right for your high mileage engine and how it impacts performance.

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Yes, it is generally okay to use thicker oil in a high mileage engine. Thicker oil provides better lubrication and can help reduce engine wear, especially in older vehicles. Consult your owner's manual or a professional mechanic to ensure compatibility with your engine.

FAQs & Answers

  1. What grade of oil is best for high mileage engines? Generally, oils with a higher viscosity like 10W-40 or 20W-50 are recommended for high mileage engines.
  2. Can thicker oil improve engine performance? Yes, thicker oil can improve lubrication and reduce wear in older engines, but always check manufacturer recommendations.
  3. How often should I change oil in a high mileage engine? It's usually recommended to change the oil every 3,000 to 5,000 miles, but consult your owner's manual for specific advice.
  4. Is there a downside to using thicker oil? Using too thick oil can lead to poor engine performance in cold weather and may affect fuel efficiency.