I am OK with dissagreement, in fact as a blender, who has been active on most of the biofuels forums for 5 years, I am used to receiving a lot of disagreement. My point is, there are three well-tested ways to burn recycled vegetable oil on a diesel engine. Not, just two ways of doing it. Just because those who have not figured out how to blend successfully are against it, does not make blending an invalid method of burning vegetable oil.