The diesel particulate filter (DPF) has continued to improve over its 15-year existence. So have other components of aftertreatment systems (ATS) that help send cleaner exhaust through the DPF.

This story appears in the May 27 print edition of Transport Topics. Retrofits of diesel particulate filters onto older vehicles that never had them will take a jump in 2014, when California’s rule ...

The Diesel Particulate Filter (DPF) is an important part of modern diesel vehicles that many people don’t understand. The DPF’s main job is to catch harmful soot and ash from the exhaust stream before ...

While the diesel particulate filter itself requires little maintenance, proper attention to related systems will help avoid problems. The U.S. Environmental Protection Agency’s 2007 emissions ...

The following was published in CCJ's Equipment Maintenance Toolkit, 8th edition, sponsored by Valvoline Heavy Duty. CCJ's Equipment Maintenance Toolkit is a ...