For fleets that may be exposed to very high-sulfur diesel fuel, oil analysis also ensures the TBN of the CJ-4 oils is adequate to meet their application and service intervals, Dias points out.
"The use of oil analysis to assess oil condition and as a monitor for drain intervals is the best practice," says Betner. "Fleets should expect to see comparable or slightly lower levels of engine wear metals for engines operating on API CJ-4 engine oil."
The advanced formulation promises benefits for all applications. "API CJ-4 products are truly the most advanced lubricants in diesel engine lubrication available today," says Dias.