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As oil ages, it tends to oxidize and may become darker. Checking the color of the oil is a simple onsite test that you can use to help determine the health of your lubricant. This 1-minute, 24-second video explains how a visual inspection can tell you if oil is oxidizing or turning dark because of contamination.
Take the next step. Learn other essential field inspections that you can use to get critical results by attending Noria's Oil Analysis training courses.