Transformer oil, or insulating oil, is a highly refined mineral or synthetic fluid used in high-voltage transformers to provide critical dielectric insulation, cool internal components, and prevent oxidation. It suppresses corona and arcing while ensuring efficient heat dissipation. Key properties include high dielectric strength, low viscosity, and high oxidation stability. Transformer Oil - Insulating Oil Available of Apar, Savita, Gandhar, HPCL, BPCL in 26 & 210 Litres Pack Buy Transformer Oil - Insulating Oil At Best Price From Power Lube, Contact Us On 9322287227 For More Details.