Pages: 84 Published: Jan 1977
This method describes an engine test procedure for evaluating certain performance characteristics of motor oils. The test evaluates the high temperature oil thickening characteristics, sludge and varnish deposits, as well as engine wear. Information letters are periodically published by General Motors in conjunction with the ASTM Engine Test Monitoring Center to provide additional new information pertaining to the test procedure.
Paper ID: STP26117S