Many years ago, my dad bought a used car and, within a short time, discovered there was a major problem with the engine because the prior owner hadn't changed the oil. The severe engine damage meant ...

WSJ Buy Side is The Wall Street Journal’s research and commerce team. Our commerce content is distinct from our newsroom coverage. We earn a commission from some links in our articles. Learn more. Car ...

The words "engine failure" easily rank among the most feared that a car owner can hear a mechanic utter. That's because those dreaded words tend to mean: First, you may be without a functional vehicle ...