Have you ever slammed on your hot rod's brakes really hard? Did the rear brakes lock up before the front ones? If so, then you're familiar with that adrenaline-pumping feeling when the tail end of ...

Imagine one day, years ago, in some equipment shed out in Middle America, an innovative farmer looking at oil dripping from the bottom of the well-seasoned 5.9L Cummins engine in his Dodge Ram pickup ...