diesels only need 2 things to run from WVO

1. WVO has to be kept hot
2. WVO has to be filtered like hell

My 7.3 truck ran off WVO in -30 below winter using tanks and hoses from the dump.

I did make a rat's nest of heating hoses running all over the fuel lines though.
Dont think theres a way to avoid this

I filtered the WVO many times using home-made filters that filtered through newspaper, screen , pantyhose, coffee filters, anything really. Using the newspaper filter last. (i'm not sure exactly what "micron" newspaper filters the oil too, but i just used it, and it seems to work. Takes forever though.

The tank that the oil sits in had a tap on the bottom to let any water out after heating up a little, although never had much in it.
it does not cost thousands of $ to get her going on WVO, and its the best idea cause its free.