What causes transformer oil leaks and how are they fixed?

Transformer oil leaks are primarily caused by aging seals, gasket failures, or corrosion of the tank. Mechanical stress and thermal cycling can exacerbate these issues. To fix leaks, technicians typically conduct a thorough inspection to identify the source, replace damaged seals or gaskets, and may apply epoxy or sealant for minor leaks. In severe cases, the transformer may need to be drained, repaired, and refilled with new oil to ensure proper operation.