Yep...it is just better refined diesel.
I kinda knew this for two reasons...1) because I've been driving a diesel for about 5 years now and I've done some reading on the subject...2)years ago,when I was almost out of heating oil during an outrageous cold snap...and didn't want to pay a $200 penalty for an "emergency delivery"...I went down to a nearby gas station and bought about 25 gallons of diesel and put it in my tank.Worked perfectly...and I saved a ton of $$$.