Originally Posted by ToddT
I haven't run the specific gravity tests on each but I've heard you can mix WVO and diesel or you can mix biodiesel and diesel... but you shouldn't mix WVO and biodiesel. I suspect the specific gravity of WVO and diesel are close enough to mix well with the WVO a little heavier. The diesel and biodiesel have close specific gravity numbers and mix well... with the bio a little lighter. But, the difference between WVO and biodiesel is too great and the WVO will drop out overnight.Todd
Your assumption is incorrect
BioDiesel and Petro Diesel are almost identical in molecular size and weight and specific gravity.
Each VO molecule yields 3 BioDiesel molecules and 1 Glycerol molecule so its molecular weight is at least 3 times that of either Bio or Petro diesel