“Diesel trucks are tough, but their heavy-duty parts cost a lot of money to repair and replace,” Musson ... The Exhaust Gas Recirculation (EGR), recirculates exhaust fumes to reduce nitrogen ...

A repair that Samson or his neighbor didn ... It's also a blow to the environment. His truck's diesel fuel doesn't evaporate like gasoline due to oil being mixed in, so the city has to use sand ...