Exxon Univolt 60 is commonly referenced as a mineral insulating oil used in oil immersed electrical equipment such as distribution transformers, power transformers, and some instrument transformers, depending on specification and approvals. Utilities choose it when it meets their required standard and performance targets for dielectric strength, oxidation stability, and viscosity behavior. Actual application depends on the specific product datasheet and the transformer manufacturer’s approved fluids list. Procurement typically relies on batch certificates and compliance documentation, not only the product name.