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Why monitoring additives is important
The role of additives are to enhance an existing property of the oil, suppress an undesirable property or add a property the base oil cannot provide. Examples of key additives are phenolic antioxidant, aminic antioxidant and AW/EP. The phenolic antioxidant is the most abundant antioxidant. The aminic antioxidant is the workhorse additive, doing most of the heavy lifting. It has the ability to regenerate or recharge itself during the cycles of oxidation. The phenolic antioxidant, however, is a sacrificial antioxidant and one of its roles is to protect the aminic antioxidant Monitoring these additives for depletion is a measurement of the ability of the oil to lubricate. When the phenolic and aminic antioxidants deplete, oxidation quickly compromises the ability of the oil to function as a lubricant.
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The PAL Series Measures Both the Antioxidant Levels
and the Amount of Oxidation Present Before a Critical Point is Reached
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