Re: Capacitor oil
> > Are there any oils (other than mineral oil) that are good for use in caps?
> > How about:
> > 1. Castor Oil
> > 2. Paraffin Oil
> > 3. Vegetable Oil
> In addition how about hydraulic fluid? The oils
> should have the water 'baked' out. Has someone
> done this?
Any oil that has a high dielectric strength and a very low viscosity will do. Typical
hydraulic oil is out because it has a zinc additive for anti wear. This reduces its
dielectric strength considerably. It also has too high a viscosity.
I have no idea about the other oils. All I can say is that those oils listed above have too
high of a viscosity, in general.
However, transformer oil is CHEAP. Why try using an oil that was not made for the purpose
intended? I bought a 5 gallon pail of transformer oil from an oil distributor for $23. It
already has the water removed, is very thin (SAE 7-9) and is the oil normally used in