When I visited the refinery, we got to talking about fuels. That's where I learned about how they run #2 three different ways. As long as it meets the spec., it can be labeled that way. So, I don't see how they can get in any trouble for doing this.
As for K1 and D1, you might be right. I am just relaying what I was told while doing my inspections. I have no reason to doubt them, but I coulda been given bad information or misunderstood what I was told.
As for additives, I still think they are a good idea with each fill.
\'99 2500 ISB QC SLT (No Leather!),4x4,5sp w/McLeod,4:10,BP8x11\'s,B-1,FMS,EZ,PE4200,LPG,H2O/CH4O,4\"exh.,Pac-Brake,OBA,more switches than you,Line-X,V-1,lts,siren,lic. plt. frm says \"<b><i>Diesel Fumes Make Me Horny!</i></b>\",and much more goofy stuff.