We start this report with a question for do-it-yourself diesel pickup owners who perform all of their truck’s engine upkeep and repair, especially those of you with oil-burners that have more than 100 ...

If you’re in fleet management or the construction industry, you undoubtedly have machines that run on diesel fuel. In addition to large trucks, more than 75% of all heavy construction equipment uses ...

Intake air and fueling are the primary components of the diesel performance formula. And, in theory, the more there is of each, the better a diesel engine will perform—provided the air and fuel are ...

Having fuel injectors on all mass-produced vehicles is one of the biggest automotive breakthroughs of the past few decades. If you've ever gone through having to start an engine with a poorly tuned ...

Diesel fuel goes bad with time, but additives can make it last longer and improve performance. Photo credit: David Traver Adolphus / AutoGuide.com. If your diesel car, truck, or even farm equipment ...