I believe these are the Caddilac oops Mercedes of biodiesel processors. Not cheap but selfcontained and pushbutton operation. I built my own but it is crude compared to these babys.
http://utahbiodieselsupply.com/biopro380.php

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It's always something simple
91 300D 603.960 (from japan) 194K
92 Toyota Diesel Landcruiser HDJ81-t 116K
02 Golf TDI new head courtesy of PO
87 300D
97 BMW 525 TDS Wagon 5spd
bunch of Onan and other diesel generators