How to make diesel fuel.

Some steps of how to make diesel fuel out of used engine oil.
Those steps are - oil preparation, oil distillation, and fuel treatment, including centrifuge filtration.
WMO centrifuge construction video: https://youtu.be/81ufo5qoc5U
Reformer construction plans: https://www.doubloonbay.net/index.php?page=detail&get_id=24&category=Featured
Website: https://ferromit.com/wasteoilreformer.html