But don't forget, when you switch back to diesel, all the leftover oil is getting returned to it. Will end up with second tank of grease eventually.

 

What I do is run in loop mode,even on diesel.I don't return veggie to its tank or diesel to its.I switch back to diesel 10 miles from home.This way works.My FM 100 filter has 2 inlets and 2 outlets.I block one outlet with a plug.One inlet is the 80 degree fuel from either diesel or veg.The other I route return line after a 3 way valve,back into other filter inlet.The return fuel is usally 180 degrees.When I switch back to diesel fuel heaters are shut down.During winter I run plain diesel and return fuel to tank.

 

i can imagine the white slime covered filter....

 

White slime is caused by filtering oil when hot.Even animal protiens will pass thru filters hot(white slime) my best oil was filtered cold at 25 degrees.
Either way wvo,or dino,both are from plants.It only one that does not produce Cancer causing chemicals.

 

"Stuff a pound of anything up a rat's ***, and he'll get cancer from it!"

Does anyone sell a comprehensive guide to use of WVO?