On paper, Nissan's variable-compression turbocharged engine should have been pretty awesome. Since it could change its compression ratio on the fly, it promised the power of a bigger engine when you ...

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 ...

At first glance, a twin-engine aircraft looks a whole lot safer than a single-engine one. After all, if you lose an engine, you still have another to keep you flying in the air, right? This isn't ...