Not all diesel is created equal. Like gasoline, it comes in various grades, and choosing the right one is important. But which should you pick?

Diesel engines run on diesel fuel, which is more efficient than gasoline because it contains 10 percent more energy per gallon than gasoline. It's also safer than gasoline because its vapors ...

Shell (NYSE:SHEL) has begun offering renewable diesel fuel at 75 Los Angeles-area Shell gasoline stations, Dow Jones reported Monday. The company is promoting renewable diesel as a low-carbon, drop-in ...