PACCAR and Cummins have initiated software updates for diesel engines to align with revised Environmental Protection Agency (EPA) guidance issued in August 2025, which increases the minimum speed threshold for diesel exhaust fluid (DEF) inducement from 5 mph to 25…
Global supply chains and overseas production have reshaped the auto industry, but heavy-duty trucks remain a bastion of American manufacturing. Several Class 8 brands continue to build their biggest rigs on U.S. soil, led by Freightliner, Peterbilt, Kenworth, Mack, Western…
Diesel engines and Corvettes aren’t a pairing that immediately springs to mind, but a handful of builders have flipped the script by stuffing oil-burning mills into America’s sports car. The results range from farm-bound beater trucks to full-blown drag monsters,…
In 1989, Dodge struck a deal with Cummins to shoehorn a heavy-duty industrial engine into its light-duty Ram trucks. The engine in question was the 5.9-liter inline-six turbo diesel, known internally as the 6BT. Originally designed for farm equipment, marine…
The majority of school buses in the US still run on diesel fuel, which can expose children to toxic fumes and increase their risk of cancer, asthma, and other health issues. Despite the potential dangers, over 85% of national school…
Modern big rigs are engineering marvels, packing over 700 horsepower engines capable of hauling triple trailers and powering Australia’s longest road trains. But their cutting-edge aerodynamics have turned them into a sea of lookalikes—long-nose American rigs and cab-over designs overseas…