My best guess that mystery oil is naphthenic mineral oil, from the looks and descriptions. I personally haven't been making or consuming any oil for months and barely at all this whole year because of the toll it toke on my lungs. I've been smoking and vaping flowers and fullmelt and I'll tell you my lungs never ever feel as clogged up as they do when strickly dabbing bho.
How much oil were you going through before? BHO with a vape pen feels so much smoother and cleaner to me than smoking flowers, but I'm not a heavy toker.