Two critical elements that need to be checked out at 100,000 miles are the EGR valve and the DPF. Hasten says to run a computerized flow test on the DPF filter tol show if the filter in the exhaust ...

Owners of diesel trucks are likely to seek methods of increasing performance and fuel economy and most probably may discover a bottleneck with the Diesel Particulate Filter (DPF). The DPF […] ...

The LB7 was also the last Duramax not to run a diesel particulate filter (DPF), an emissions-reducing technology that has the unfortunate side-effect of reducing fuel economy. So, LBZ-equipped GM ...

Back in 1998, General Motors and Isuzu teamed up to create a brand-new diesel engine that would be the first high-pressure common-rail, direct-injection powerplant to hit the U.S. vehicle market. The ...