Application Note

Soot Content Determination of In-Service Lubricants of Diesel Engine as Per ASTM D5967 Annex A4


Internal combustion in an engine produces soot as a result of incomplete fuel combustion. The soot deposits deplete the quantity of dispersant additives which may cause an increase in viscosity which in turn increases engine wear. These soot particles adversely affect the engine performance and can lead to damage of the engine parts. This application note demonstrates the quantification of soot content as well as the repeatability of the measurement.