Well ladies & gents... the results are in, and SWIM has determined unequivocally:
Ultra Pure Lamp Oil Works!!!
The liquid parrafin, mineral oil is a viable and effective replacement for naptha. It has no real odor to speak of (real bonus over naptha), it is significantly less toxic (in case of spills), and it produces beautiful crystals. I would stop short of calling it non-toxic despite (as Psyren has said) the fact that some people ingest it purposefully.
The main drawback here is that it evaporates MUCH slower than naptha. Ridiculously slow actually. Even just evapping the remains from pouring off a freeze precip can take 3 or more days to dry fully. The little crystals from the freeze precip basically always melt again, and continue to form and melt again. Then the lengthy evap causes beautiful re-x type crystals to form. It basically re-x's itself... leaving very minor bits of oil and jungle alks to the side.
SWIM made his pulls with warm stuff, and even still, the amount of oils and jungle alks was far less than even a room temp naptha pull. If I had to guess, I would say that liquid parrafin is even more selective of pure DMT than naptha... and certainly quite a bit more than Zippo fluid (which contains toulene).
SWIM also found that not all the DMT freezes out... perhaps his freezer would need to be even colder. The liquid he poured off still clouded when breathed on, and seemed to have significant alks inside. He will use that stuff for another round of pulls, and another freeze precip... but at some point, he recognizes he will have to evap it all to get all the goodies out. This could take well over a week even in a very wide baking dish. We shall see... turn that page when we get to it.
Anyway... for all those wondering about this NPS, it is a definitive thumbs up.