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What are the signs of old engine oil?

I’ve always gotten an oil change when my car’s system tells me it’s time, but my friend told me that it’s better to get it changed more frequently. What are the signs of old engine oil?

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Jim Burg · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Welcome to a question as old as cars themselves—when should you change your oil? Your engine oil quality is primarily affected by two things: mileage and time.
Typical symptoms of old engine oil are:
  • Sluggish acceleration
  • Decreased efficiency
  • Engine overheats
  • Engine makes ticking noises
If you notice any of these signs, it could mean that your engine oil is old and it may be time for an oil change.
While there is no downside to changing your oil more frequently, it may not give you added longevity and will almost certainly cost more money.
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