I can assure everyone of two things.
Death and taxes.
What if you practice Buddhism?
Seriously, with the luck that I have I believe I truly killed someone in my previous life...
Not sure about the red dye. Maybe mix in some clean motor oil to dilute the color down?
The whole on road diesel tax is quite elusive. I really think it is all fear factor for us. I've never seen a class 3 or lower rig get dipped where I live. Most of them are filling up with off road at the pump which is closest to the roads...LEO's never even blinked at it.
Then you can get into the whole issue of you accruing less miles than the state mimimums where you are required to fill out a form if you are putting off road in an on road. This from what I understand is 100% legal if the outfit is paying tax accordingly and filing the appropriate forms. Then you can get into the whole "I burn biodiesel or WMO" guys who again fall into a mileage category that the government could care less about. At this point you technically are running untaxed fuel which would include off road diesel. It's such a cluster to figure out what is legal but then again what isn't?