I like blending with diesel. It keeps things smooth and quiet. RUG seems a little "spicy" for my engine. It seems to make my engine knock like I was running regular dino diesel. That's not bad, I guess. I just like the extra smoothness factor.

IIRC, you need to know if your source for diesel is using paraffin based or kerosene based additions to the fuel to avoid the wax separation problem.