All I remember is one year I lost the heat in the the building over a weekend and the pump and fluid froze up solid.
It was biodegradable whatever it was and had a sticky feel to it.
I got stuff from Grainger for the horizontal band saw at the cold storage. I think we cut it 50/50 with water to start and just added water as it evaporated till it was really filthy. then cleaned the whole mess out and started over.