How does silicone oil improve transformer oil cooling efficiency compared to other oils?

Silicone oil enhances cooling efficiency due to its high thermal conductivity and stable viscosity across a wide temperature range. It effectively absorbs and transfers heat away from transformer components, maintaining optimal operating temperatures. Unlike some other oils, silicone oil retains its fluidity at low temperatures and doesn’t thin excessively at high temperatures, ensuring consistent cooling performance. Its resistance to thermal degradation means it continues to perform effectively over time, contributing to the transformer’s reliability and longevity.