New API specification PC- 9 test methods Cummins M - 11 /EGR and Mack T - 10 evaluate anti - wear performance of high soot level diesel engine oil on the position of engine such as cylinder wall,cross head, rocker and top piston ring.

• API推出了相应的标准发动机台架评定方法Cummins M-11/EGR及Mack T-10,用于评价PC-9规格的柴油机油在高烟炱的操作条件下在缸套、十字头、摇臂和顶环部位的抗磨损性能。