Engine oil performs several vital functions: it keeps everything lubricated and running smoothly while also preventing corrosion inside the engine block, keeps things somewhat clean, and even helps ...
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What your engine oil colour is actually telling you
Engine oil color reveals its age, contamination level, and operating condition. Fresh oil is amber or light brown. Oil darkened to black but still translucent after a few thousand miles is normal.
Healthy engine oil should be light brown, so if yours is black, you may be wondering if it's time for an oil change. Here's ...
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