It's tiki torch fuel, opened but mostly full bottles dropped off at Goodwill at end of summer, big bottle $1.99. Bought several bottles. The one I have handy does not show content and percentages, but other bottle said about 96% mineral oil, and the rest is natural anti-bug stuff like citronella oil and lemongrass oil. Yes, it sure does evaporate slow, takes a day or two or more after cleaning, which is not a problem as I'm not going to worry about a tiny bit of something that mixes fine with the oil. Also, slow evap makes it super safe, not volatile, I think needs a wick to burn. Excellent chain cleaner, was quite surprised how well it dissolved 75W-90 synthetic gear lube that is well pasted due to suspension of ultrafine steel powder, that's the clue that it's time to clean the chain and relube.

Also, excellent bug spray (my apartment and kitchen is spotless but it's a big building with other more careless residents), the STEM non-toxic bug spray is 6.2% geraniol, 0.5% lemongrass oil, and 93.3% "other ingredients" and fine print says white mineral oil, and a couple other chems. When I ran out, I looked and the torch fuel looked close enough, refilled the bottle, kills bugs (roaches) the same, just takes a bit longer. Sprayed on fabric or cardboard, and yeah, will be stained for months while it slowly evaporates, if not washed sooner. Marvel Mystery Oil is mostly mineral oil, with a bit of stoddard solvent (white spirit) and tiny amounts of other chems. So there's that. Just wide uses. Like when I had Coleman Fuel around, had half a dozen uses for that, when it was $5/gal and not $20/gal.