Factors contributing to silicone oil degradation include:

Thermal Stress: Prolonged exposure to high temperatures can break down the oil’s molecular structure.
Oxidation: Reaction with oxygen leads to the formation of acids and sludge.
Moisture Contamination: Water ingress accelerates hydrolysis and reduces dielectric strength.
Electrical Stress: High electrical fields can cause partial discharges, degrading the oil.
Contaminants: Particulate matter and metal ions catalyze degradation processes.
Regular monitoring and maintenance are required to mitigate these factors and maintain oil performance.