Spelab diesel performance products help improve airflow efficiency, exhaust dynamics, and system durability under demanding ...

Starting today, refineries that produce diesel fuel for the off-road market must decrease the sulfur content level to 500 parts per million (PPM) from the current 3,000 PPM standard Starting today, ...

The 2026 Ram Diesel Power Wagon returns with the high-output Cummins diesel, higher tow ratings, and no factory winch due to packaging limits.

A lot of drivers spend the majority of their time behind the wheel on smooth, comfortable, familiar tarmac — if they're lucky enough that the roads they commonly travel on are well-maintained, anyway.

WASHINGTON — Pollution should be sharply reduced from off-road vehicles and equipment ranging from forklifts to farm tractors to tugboats under regulations announced Monday by the Bush administration.

The Bush Administration is drafting new rules that would bring emissions standards for off-road diesel-powered vehicles and machinery in line with rules that went into effect for on-road heavy-duty ...