I drive a 2009 6.4 PSD. I have WVO readily available. Tried DSE. Seemed to run fine. Got gun shy. I need some advice on what my options are. WVO blends? Bio-diesel? I make many short trips to town to and from work. (approx. 5 miles) Space is not a problem to build a fuel station, etc. We have cold winters and hot summers. Help!!!