Univolt™ transformer oils — Formulated to improve performance and extend transformer life. Ready to experience a transformation? The next generation of Univolt transformer oils is formulated to improve performance and extend transformer life. Since ExxonMobil first developed a transformer oil in 1893, Univolt products have continued to redefine the industry standard.
Historically, naphthenic oils have provided generally acceptable properties as transformer oils. However, Univolt paraffinic oils surpass traditional naphthenic oil performance in many key areas, backed by more than 100 years of industry experience and supply reliability. Because the future begins with the current.