From what I've read, running B20 I shouldn't need to use any Diesel Kleen or other additives either, right? If that's the case, there's another 5-6 cents a gallon savings - for a total of about a quarter a gallon! That's pretty significant in my book.
Yeah your right about not needing DK when using b20. But you might want to use an anti-get for the 80% dino diesel that its mixed with.