Ameican Society for Testing and Materials.Single cylinder engine tests for evaluating the performance of crankease lubricants．part. 1，Caterpillar IG2 test methods, not an ASTM standard.ASTM,1979.
Ameican Society for Testing and Materials.Single cylinder engine tests for evaluating the performance of crankease lubricants．part. 2，Caterpillar IG2 test methods, not an ASTM standard.ASTM,1979.
