DPF

John Dutra is a one-man band, running his custom-upfit 1991 Isuzu FSR for construction work in the South Bay of San Francisco. Dutra couldn’t have known when he bought his truck so many years ago that today he’d be staring down a government mandate to (in all practicality) buy a cleaner truck.

Diesel particulate filters help cleanse exhaust and give us cleaner air to breathe, but they cause frequent grief and expense.

According to a group of collaborating researchers, emissions at the Port of Oakland, Calif., have decreased dramatically due to more stringent California Air Resources Board (CARB) regulation.

Sales of diesel particulate filters for commercial trucks and buses in California increased at the end of 2013 and in the first half of 2014 compared to the first half of 2013, according a survey released by the Manufacturers of Emission Controls Association.

A lot has happened since 2007 to impact medium-duty truck maintenance costs and protocols — for better and for worse.

While most of the early problems have been engineered out of the exhaust gas recirculation systems on today’s clean diesel engines, corroded coolers, stuck valves and other problems still plague owners of older equipment.

The California Air Resources Board announced that it will give a break to some truckers who are working to meet a January deadline for upgrades to their aging diesel fleets.

Truckers who don't run a lot of miles in California may get more time to comply with emissions rules.

How much tampering with exhaust emissions equipment goes on out there? No one knows for sure, but panelists at a session of the Technology & Maintenance Council’s fall meeting in Pittsburgh last week said they had seen some flagrant cases.

Is it time to replace your old truck or tractor? Is it old enough that its engine has none of the exhaust-emissions equipment that’s been giving people fits in recent years? Have you decided to take the plunge anyway because your vehicle is just plain worn out? Here's what you need to know about emissions equipment when buying a used truck built in the last decade.

What type of engine systems and parts will you be dealing with in the future? From electric-drive turbos to waste heat regeneration, Derek Kaufman, president of C3 Network, examined powertrain trends during Heavy Duty Aftermarket Week earlier this year.

Brush fires caused by sparks from its diesel particulate filters and expensive recalls have apparently caused Cleaire, Inc., a California specialty manufacturer, to suddenly shut down.

Cleaire Advanced Emission Controls announced today that the California Air Resources Board has verified the LongMile-S diesel particulate filter as Level 3+ for on-road applications

Cleaire Advanced Emission Controls announced that the California Air Resources Board has approved an expansion of the previously verified Vista diesel particulate filter to cover a broad range of 1993 and newer model year engines