If I understand correctly, it’s a diesel that’s been converted to running oil? Or, it includes a kit to make that possible?
https://www.facebook.com/marketplace/item/280790956427340/
“jeep season, need to sell my cj10 $ 5000 wt oil conversion, run for free”
It sounds like it’s been converted to run waste oil, which is often easily available at small non-jet airports from the FBO for free.