Most people pump diesel without thinking about what's in the nozzle, but the stuff has a long journey before it hits your fuel tank. Diesel doesn't magically come out from underground — it's ...

Trying to mix gasoline and diesel in most engines will only lead to problems in the long run. But engineers have found a way for the fuels to coexist.

So, you’re weighing the benefits of diesel vs. gas and day dreaming about how cool it would be to put the hammer down and roll some coal in a big diesel truck. Well, pump your brakes for minute. While ...