Home mechanics have been pouring vegetable oil into engines for years, sometimes in the fuel tank, sometimes straight into ...

Diesel engines do their hardest work in the toughest jobs, from highway semis to construction equipment, and the reason they ...

There’s still another couple of months before the 2026 crop of F1 cars takes to the track for the first preseason test. It’s a year of big change for the sport, which is adopting new power unit rules ...

The 2020-2022 Shelby GT500’s DCT cooler lines can leak. SPE Motorsport developed a direct-replacement solution.

Preparing for EPA 2027? API’s new PC-12 spec (CL-4 and FB-4) introduces ultra-low viscosity 0W-20 oils and stricter emissions ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

Diesel engines have changed a lot in the last 20 years, yet the EGR system remains one of the most misunderstood components. In workshops, online forums, and classrooms, conversations about the egr ...

HIGHS Factory-installed cool factor, smooth ride, now offers smooth Duramax diesel. LOWS Lacks larger tire options, awkward shift lever, not wild enough. VERDICT The ZR2's Multimatic suspension gives ...

Until the Cummins is offered later this year, the 2026 Ram Power Wagon comes standard with a 6.4-liter Hemi gasoline V8 rated at a mere 405 horsepower and 429 pound-feet of torque, paired with an ...