DBPC, or dibenzylparacresol, is an antioxidant additive commonly used in transformer oil formulations. It helps enhance the stability and longevity of transformer oils by preventing the oxidation process that can lead to the degradation of the oil. The presence of DBPC in transformer oil ensures better thermal and oxidative stability, thus extending the service life of the oil and, consequently, the performance of the transformer itself. By reducing the formation of corrosive acids and sludge, DBPC contributes to the effective functioning and reliability of electrical transformers, ensuring they operate safely and efficiently over time, making it a crucial component in maintaining the quality of dbpc transformer oil.