Development of a method for the characterization of deposit forming tendencies of high temperature liquid lubricants

Joseph Manuel Sr Perez, P. Pei, Y. Zhang, S. M. Hsu

Research output: Contribution to journalConference article


This paper describes the development of a pressurized differential scanning calorimeter (PDSC) method for the characterization of the deposit forming tendencies of engine lubricants and their components. Test repeatability and reproducibility are described for a series of current diesel engine oils. A comparison of the results with engine performance test data and with other test methods such as the thin film microoxidation test is made. The effect of variables such as temperature and pressure indicates significant variation due to the relative rates of oxidation and evaporation as a major factor in the rate of deposit formation. Some applications of the method in the development of high temperature liquid lubricants are described.

Original languageEnglish (US)
Number of pages1
JournalAmerican Chemical Society, Division of Petroleum Chemistry, Preprints
Issue number2
StatePublished - Apr 1 1990
EventSymposium on Selective Catalytic Oxidation of Hydrocarbons - Presented before the Division of Petroleum Chemistry, ACS, Boston Meeting - Boston, MA, USA
Duration: Apr 22 1990Apr 27 1990


All Science Journal Classification (ASJC) codes

  • Fuel Technology

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