For fun, about 1 year ago, I crushed a capacitor off a junked circuit board in a vise. There was a small amount of some type of juice or oil that came out.
Then, looking inside my mom's ATX power supply, I found the capacitor had burst. I found brown fluid inside the power supply, which I assumed to be from capacitor.
What is this stuff? And, what is the purpose? I thought a capacitor was two plates of conductive material with a dielectric between, creating the electric field. What purpose would fluid have?