I've seen some examples from Chevron of double the miles of TBN / TAN Crossover point. At that point TBN was almost non-existent. The TAN appeared elevated and yet the Oxidation and Nitration appeared to be in check and the iron wear numbers were not elevated.
How do we interpret the proper change interval with modern low sulphur fuel? It appears traditional guidelines may be overly conservative.
How do we interpret the proper change interval with modern low sulphur fuel? It appears traditional guidelines may be overly conservative.
