At this stage, it's looking more and more like only rich people can afford gas, and the situation is even worse if you need to fill up with diesel. The cost of diesel fuel rose above $5 per gallon in ...

There are lots of ways to tell the difference between diesel fuel and gasoline, but if you're comparing diesel and something ...

Most heavy-duty vehicles run on diesel engines, which you probably already know. What you might not realize is that there are actually different kinds of diesel fuels for various uses. One type that ...