Over the last decade or so there have been significant changes with respect to contaminant loading in engines, giving rise to a different approach to engine oil analysis and the interpretation of its results. But as an industry, we could do much more to facilitate a good understanding of these changes in the market place. This article seeks to provide some of the background that set the heavy-duty industry on the path to where we are today, and perhaps to lay the groundwork for changes in practice that will keep us moving forward together.
TBN: What is it and what has changed?