Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...

For many years, owners of three-quarter and one-ton pickup trucks enjoyed the fact that there was no smog equipment on their trucks. But in 2008 the EPA required diesel particulate filters on all ...

DEF: Those initials may have caught your eye at the auto parts store, dealership or even your local gas station. And if you happen to have a modern diesel car or truck, you may even have added to your ...