The rapid determination of insoluble matter in used diesel engine lubricating oils - Development of the transmission densitometry 'spot' technique (TM-LON-25)

The use of a transmission densitometer of improved design for reading 'spots' in the rapid checking of insoluble matter in used diesel engine oils has reduced the necessity for lengthy solvent extraction determinations. This has reduced the cost of controlling used engine oils from service, following changes in oil formulations...