This 1990 M998 Humvee has a potent 6.5-liter turbodiesel powerplant and surprising mods like rear-steer and 42-inch tires.
Small maintenance changes increase fuel economy on heavy tow rigs. Here how to keep extra cash in your wallet at the fuel station.
Hot Shot’s Secret announces the 2026 NTPA Hot Shot’s Secret Challenge, committing $30,000 in bonus payouts.
Ford's 6.7-liter Power Stroke cooling system is one of its most complex. SPE's Dan Snyder walks us through how it works and how to improve it.
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