One of the most recognizable semi truck features are the vertical exhaust stacks. Other than looking cool, do they actually serve any purpose?

Putting stacks anywhere on a Ford Ranger-type truck - which runs on gas, not diesel - is unusual, said Josh Stewart, technical specialist at Ohio-based exhaust manufacturer Grand Rock.

Unlike gas pickup trucks, diesel-powered trucks utilize specifically vented exhausts, as diesel fuels require an extra step in the emissions process.

Diesel Exhaust Fluid and selective catalytic reduction are working to make diesel cleaner more efficient than ever.

That alone would be radical enough, but the seller then added functional semi truck exhaust stacks and a massive 60-gallon fuel tank. It's almost the most perfect van you'll ever see.

The U.S. could be facing a shortage of diesel exhaust fluid, which is necessary for trucks manufactured after 2010. A driver fills up the tank of his car with diesel at a fuel station on ...

Recently, there's been a lot of hype and attention given to the practice by some diesel truck owners/operators known as "Rolling Coal." Essentially, too much fuel is dumped into the engine ...

The Diesel Brothers, stars of a Discovery Channel reality-TV show, have been fined more than $850,000 for bypassing emissions regulations in customizing the trucks that star on their show. The ...

Check out Banks new exhaust brake for diesel trucks that comes with the brake unit, vacuum actuator pump, stainless steel outlet pipe, wiring loom, and more. It is perfect for towing and we ...

This obscure Korean pickup truck was a byproduct of a failed electric truck conversion program. Now, it has a Ford V8.