Westport Fuel Systems recently unveiled its H 2 HPDI fuel system in a demonstrator truck. Westport’s HPDI fuel system technology enables heavy-duty trucks to operate on bio-methane (renewable natural ...

NOTE: With this issue of HOT ROD, your Shop Series begins a slightly different and more comprehensive approach to the discussion of engine and vehicle basics. In the coming months, you'll find a frank ...

Learn how to use dielectric grease on spark plug boots to prevent voltage leaks and corrosion. Follow our guide to protect ...