1*You are right you have to burn what is availible. An additve would probaly be a good idea then.
In Indiana we are pretty lucky to have a refinery that was built by farmers for farmers that has products aimed at tractors performing well.
This is an interesting link to follow. They have a tank farm in my town so
2*I can uasally get quality road diesel for my truck for less than the cut rate stations who truck it in.
3*I have a bulk tank at home they deliver to for my off road.
4* It is a 150 gallon mininum for delivery.
5** It is sure nice having a bulk tank at home though.