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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…


Dean Smallwood is managing editor of Commercial Carrier Journal and Overdrive. He has more than two decades of journalism experience, with more than half of that spent covering the transportation industry. Daytime Phone: 800-633-5953, ext. 1039