Just found this non-toxic thinner on Blick. sennelier-green-for-oil-thinnerhttps://www.dickblick.com/products/sennelier-green-for-oil-thinner/
It’s supposed to not require ventilation. I know some of you are cutting holes in your ceiling and freezing/melting your behinds off, getting tired of your cat staring at you throught the door! You might want to pump your brakes. The thread is also started in the technical oil painting forum. If you have any good info please post it over there. I haven’t tried it yet so I don’t know if it’s any good.
https://www.wetcanvas.com/forums/showthread.php?t=1447854