Mineral oil derived from petroleum is the most preferred liquid insulation and coolant in power and distribution transformers because of its stability at high temperatures. as well as its excellent electrical insulating properties. Since it is non-biodegradable and inflammable. an alternative insulating liquid should be developed. https://www.roneverhart.com/SWW-x-SXSW-Cake-Something-Was-Wrong-2-8x3/