Cargill, Inc.

For more than 30 years, FR3® natural ester fluid has set the benchmark for transformer performance. From its earliest validation tests and growing to 5+ million installations worldwide today, FR3 oil continues to lead the industry in fire safety, reliability, and resilience. Its higher flash point (compared to mineral oil) delivers a significant fire safety advantage, while its proven dielectric performance supports longer-lasting, higher-performing transformers than transformers using mineral oil.

Mineral oil may have been the traditional choice, but it’s no longer the optimal one. Across the globe, utilities and manufacturers alike have turned to FR3 natural ester fluid as the superior alternative—one backed by decades of leadership and real-world experience. With FR3 oil, you gain the confidence and performance today’s power systems demand.