What causes engine oil to turn dark quickly?

I know that oil gets darker over time, but I feel like it’s happening in my engine way too fast. I changed my oil, checked it a few hours later, and it was already brown. What might cause engine oil to turn dark so quickly?

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Answer provided by
Patrick Price
Answered on Apr 28, 2022
Excellent question! Actually, a few hours is more than enough time for your engine oil to take a brownish hue—it really only takes about 30 seconds! The color change is because the oil picks up the grease and grime that occurs naturally in your engine.
A dark brown coloring in your oil is nothing to worry about. Even oil that is almost black isn’t too serious as it’s caused by soot which isn’t harmful unless it builds up too much. Your engine will naturally produce soot over time. If you think it’s producing too much, you may want to have a mechanic examine your injection system
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