Even if you don't plan on ever owning a car with a diesel engine, you may still want to know how they compare to gas engines in terms of costs and maintenance.

EPA demands DEF failure data from diesel makers. Investigation could force recalls and software fixes for engines already on U.S. roads. 30-day deadline set.

When winter temperatures plunge, many diesel truck owners make starting their vehicles easier with a block heater. But when, exactly, should you use it?

Just because the oil on your dipstick is black doesn't mean it's time for an oil change. In fact, that really just means the ...

To clean, simply mist the engine bay with your spray, let it sit for a few minutes, then rinse. If your engine bay is especially dirty, you can agitate the grime with a rag, or you can even use a ...