I work for esso delivering bulk fuel and oil. I can tell you that it is perfectly fine diesel and that there is actually little difference between brands. Without naming names...they all get their diesel from the same card lock. The only difference is a few proprietary chemicals that they add, however these chemicals are the same but with different names and slightly different amounts. As far as additives, Howes or Redline....they work. I will say that diesel is not what it used to be. The advent of Low Sulfer diesel has robbed it of its natural lubricty, therefore a conditioner is a must.