Oregon mandates 5% biodiesel in their diesel but I only ran it a short while before heading back to Ca. I have noticed an increase in mileage running Az and Ut fuel. It appears to foam up more than our eco crap.
The folly of ethanol is that it requires more energy to refine than it gives off in energy. The farmers are happy,but that's about it. A retired employee of the EPA was on tv saying there are 30+ gasoline blends the refiners must produce. He argued that emissions know no borders and that a half dozen would suffice easily. What a crock.
2007 Dodge 2500 Regcab 4wd 5.9 CTD. G-56 , TC800 Northstar popup 24/7.