I have been researching on this as well. I think the 2 tank svo system is the most effective being that it uses all the wvo without leaving any bi-product. However I have a 06 truck under warranty so I don't think the dealer would like to see all that plumbing and tanks on the truck. So for me right now I just blend a 70% ulsd with 30% 1 micron filtered and dewatered wvo. It runs fine with no start up issues. Above 30% and it will smoke a little on cold starts. I am going to start making biodiesel soon when I get the rest of the equipment. It took me a while to figure out my oil collection system, dewatering system, and filtering system alone. So now that I have that down I can begin on my processor.
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white 06 3500 Mega Cad dually / K&N drop in / Predator box (#2019) / muffler delete/ home brew B100 here I come!:thumbsup still blending up to 30%wvo