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Rislone DPF Cleaner being poured into a fuel tank.
Newsby StaffMay 27, 2025

How Can You Tell if Your Diesel Vehicle’s DPF Needs Cleaning?

There are six warning signs your diesel particulate filter (DPF) needs maintenance - and it's more than just the DPF light on the dashboard.

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Newsby StaffNovember 18, 2021

Oregon Adopts Clean-Trucks Rules; Other States May Follow

Oregon's new rules will speed the transition to electric and lower-emissions trucks, buses, and vans, and likely will inspire other states to also adopt the emissions regulations.

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Newsby StaffJune 26, 2020

CARB Passes Advanced Clean Trucks Rule

The new California Air Resources Board standard mandates that by 2045, every new truck sold in California will be zero-emission.

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Articlesby Shelley MikaJanuary 6, 2020

Gasoline or Diesel: What's the Difference?

Costs. Maintenance. Engine life. Performance. Which powertrain has the advantage? Gasoline, or diesel? Which one is right for your fleet? Likely, it depends.

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Newsby StaffApril 30, 2019

Cummins Reviews Certification of Ram Diesel Engine

Cummins Inc. has begun a formal review of its emissions certification and compliance process relating to diesel engines it supplies to Fiat Chrysler Automobiles for Ram pickups, the engine-maker has announced.

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Newsby StaffApril 8, 2019

Fiat Chrysler Settles Diesel Suit for $110M

Fiat Chrysler Automobiles NV will pay $110 million to settle a lawsuit that it misled U.S. investors over excess diesel emissions and failed to comply with federal safety regulations.

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Newsby StaffDecember 6, 2018

City of Beverly Hills Runs 100% Renewable Diesel

The second generation of biofuels and renewable diesel is here, but what does that mean for Beverly Hills fleet manager Craig Crowder? For the City's fleet of 445 vehicles, it means better performance, reduced maintenance, and a more sustainable way to serve the city.

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Newsby StaffNovember 8, 2018

FedEx Improves Fuel Efficiency by 2.9%

FedEx Express improved fuel efficiency by 2.9% in fiscal year 2017 and has moved closer to meeting its corporate goal of a 50% increase by 2025 over 2005 levels, the company reported in its annual sustainability report.

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Newsby Paul ClintonNovember 7, 2018

Voters Turn Away Fuel, Energy Taxes in Several States

Voters in Missouri, Utah, and Washington rejected state ballot measures on Tuesday that would have added new taxes on fuel or energy use by fleet vehicles, while California voters elected to keep increased fuel taxes in place to fund the state's infrastructure.

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Newsby StaffJuly 17, 2018

Final VW Diesel Modification Approved

Volkswagen has gained approval from air regulators of the final modification plan for the remaining vehicles that contain software designed to defeat emissions tests, the California Air Resources Board has announced.

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