Darryl Purificati, OEM technical liaison at HollyFrontier Lubricants & Specialties, which includes the Petro-Canada Lubricants brand, said incorporating a used oil analysis program into your maintenance schedule provides "insight into the health of the lubricant, contaminants within the engine and the overall engine condition."
A sample's ability to help diagnose potential engine issues can prove to be "the bigger utility of oil analysis," added Chevron Senior Staff Engineer Shawn Whitacre. "It can tell you early on about the possibility to coolant leaks, issues with air filtration, maybe even about injectors that are bleeding fuel into the crankcase or not offering good combustion and putting a bunch of soot into the oil. Once you become familiar with the broad variety of information that is offered via the oil analysis, the more you can kind of warm up to its various utilities."
Karin Haumann, OEM technical manager for Shell Global Solutions, noted small fleets can use an engine oil analysis program to monitor the condition of each of their trucks and to customize the drain interval, while larger fleets can select trucks representative of a group of trucks within the fleet that operate in similar conditions and sample their oil to establish the optimum oil drain intervals for each group.
"Optimally, you should have a sample of used oil analyzed after every oil change for every truck," Haumann said. "Closely examining the characteristics of the oil regularly can tell you a lot about both the health of the oil as well as indicate mechanical issues with an engine. This can help spot any problems with an engine early on and save on downtime and expensive repairs."
Oil analysis, Haumann said, isn't just for fleets interested in testing new oil types or seeking to change oil drain intervals. It can determine the useful life remaining in engine oil as it looks at things like oxidation and nitration, additive depletion and viscosity.
