8.3.10.3 Silicone Oil (Dow Corning 200.05, 200.10, 200.20)
Silicone oils are available which offer a much wider operating temperature range
than mineral oil. Like most oils, silicone oils have temperature control
characteristics which are somewhat poorer than water. The viscosity changes
significantly with temperature and thermal expansion also occurs. These oils
have very high electrical resistivity. Silicone oils are fairly safe and non-toxic.
Silicone oils are fairly expensive.