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Total Base Number and three more lube indicators to track

Total Base Number (TBN) or Base Number (BN) is a common term referenced by diesel engine OEMs, used oil analysis labs, fleet mechanics and oil…


Jack Roberts is executive editor for CCJ and equipment editor for its sister magazine Overdrive. Roberts joined Randall-Reilly in 1995 as associate editor of Equipment World magazine and began covering both heavy-duty and light trucks in 1996. In 2006 he was the founding editor of Total Landscape Care before joining CCJ's staff in 2008.