December 17, 2013

Remaining Useful Service Life Reporting Tool
by David Doyle, CLS, OMA I, OMA II
Vice President, Americas

ALS Tribology has made available a reporting tool for monitoring and reporting the percent remaining useful service life of in-service engine oils in heavy duty diesel engines. This report incorporates key oil condition parameters into service algorithms that provide the calculated percent remaining service life of diesel engine oils at the time of sampling and testing. This reporting tool can be incorporated into overall fleet lubricant management to monitor optimal drain intervals. Fleet equipment that demonstrates too much or too little cushion with the useful remaining service life during drain intervals provides an opportunity for optimization.  

This reporting tool can assist in making lubricant management decisions fleet-wide. Product changes, either through introducing new lubricants or consolidating inventory, can be easily monitored. Data can be correlated with product brands and types, equipment age, as well as make and model. The report only incorporates test results for samples that are within normal or cautionary severity ratings so that the percent remaining useful life assessment relates to lubricant condition that is not yet past a safety threshold. This way a true picture of a lubricants expected life performance can be determined. 

This reporting perspective lends itself to overall fleet management. In the past, focus on equipment reliability management and using oil analysis as a tool for maintenance practices has generally focused on individual pieces of equipment. With today’s reporting tools a more modern approach for using oil analysis allows for end-users with a large inventory of equipment assets to manage their lubricant practices related to equipment reliability on a fleet-wide basis.

Managing lubricant practices related to equipment reliability and reporting on a fleet-wide basis provides a view of overall asset health and allows decisions to be made fleet-wide. This not only relates to optimal drain intervals for overall reliability. In-service oil analysis reporting tools can help monitor goals for equipment management, lubrication management, and maintenance management. Though the example used in this short article reflects fleet management of lubricant related maintenance and management practices, this philosophy is also relevant to industrial applications that have a large investment in assets.

ALS Tribology is available to work with our end-user clients to assist with establishing management reports for optimizing drain intervals, monitoring overall fleet health, and goal setting that demonstrates return on investment. If you would like further information please contact

Laura Boehm,, 281.575.2198
Ariell Hendricks,, 503.286.9845






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