Is transformer oil considered hazardous?

Yes, transformer oil is considered hazardous due to its chemical composition and potential environmental impact. It typically contains mineral oils, which can be harmful if released into the environment. Additionally, if transformer oil is contaminated with polychlorinated biphenyls (PCBs), which were historically used in transformers, it becomes even more hazardous. Proper handling, storage, and disposal are essential to mitigate risks associated with transformer oil. Always follow local regulations when dealing with hydraulic fluids to ensure safety and compliance.