What are the uses of used transformer oil in power transformers?

Used transformer oil in power transformers can be repurposed for several applications. It is often processed and refined to remove contaminants, allowing it to be reused as insulation fluid in other transformers or electrical equipment. Additionally, used transformer oil can be utilized as a lubricant in industrial machinery or as a feedstock for producing biofuels and other chemical products, contributing to resource recovery and sustainability efforts.