During the analysis, the pressure of the sample is monitored. When the oil's oxidation inhibitors fail, the oil will absorb the oxygen, resulting in a pressure drop. The result is known as the RBOT Remaining Life, and it is expressed in minutes. Depending on the type of oil, ASTM D-2272 takes a few hours to a few days to complete. The RBOT Remaining Life, when related to the RBOT Life of the oil when it was new, indicates the characteristics of the oil's current oxidation stability.
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