Base Number

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acid number and base number limits
  • Oil Analysis + Wear Particle

Setting Acid Number and Base Number Limits

There is a rule-of-thumb that oil should be condemned at double its new oil Acid Number, or at half of its new oil Base Number. The problem with this rule is that is has too many exceptions to be valid. Rather than identify the valid instances, it is better to understand how to derive a correct limit for any application..

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