USING LABORATORY TESTS TO PREDICT OXIDATION IN TODAY'S ENGINES

Laboratory bench tests are used to predict lubricant performance in modern engines. The evolution of ASTM (American Society of Testing and Materials) engine Sequence tests and associated laboratory bench tests is reviewed. Several oxidation screening tests are described. Correlation of oxidation screening tests with ASTM Sequence Ⅲ high temperature oxidation engine test is addressed, using both European and ASTM reference oils. Modification of the oxidation screening test methods is attempted in order to improve the correlation as the Sequence Ⅲ test method evolves.