Despite their collective impact on air quality, the Environmental Protection Agency regulates nitrogen oxide and particulate matter emissions independently. In this week's 10-44, Jason and Matt are joined by Chevron Lubricants Senior Staff Engineer Shawn Whitacre to discuss why, and which truck systems have the greatest influence on the various types of diesel engine emissions as more strict air quality and emission regulations loom over the trucking industry.
02:14 Combustion, emissions, and particulate matter
04:00 NOx and particulate matter
07:32 Engine compliance
09:01 New oil formulation standards