IP 453: Determination of the high temperature foaming characteristics of lubricating oils

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  • Method adopted/last revised:
  • Method reapproved: 2021
  • Status: Current
  • First printed in STM books: 2009

This standard1) specifies a method for the determination of the foaming characteristics of automotive lubricants and transmission fluids at 150°C. The standard is used to assess the tendency of oils to foam at high temperature in applications such as high-speed gearing, high volume pumping and splash lubrication, where inadequate lubrication, cavitation, and loss of lubricant due to overflow, may lead to mechanical failure.

NOTE - Foaming characteristics of lubricating oils at temperatures up to 93,5°C are determined by IP 146.

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