Additionally, there are multiple classifications of motor oil that are better suited to one particular sort of car over the other. Knowing what these numbers and classifications mean can help you ...

For the first time in many years, the American Petroleum Institute (API) introduced a split diesel engine oil classification to address the diverging needs of engines stemming from new on-highway ...

Whitacre, a senior staff engineer for Chevron, is the new chairman of the ASTM’s Heavy-Duty Engine Oil Classification Panel, replacing outgoing chairman Jim McGeehan, a longtime Chevron oil ...