I've built 2 Oil cooled computers in the past using plastic tubs filled with oil cooled by radiators, and today, I was thinking about building another one.
I'm curious as how people accomplish this other than myself, but also, if it would be efficient to fashion a simply copper box, with heatsinks of the sides and use it as the medium for holding the oil. Would there be a downside if it actually did cool the computer? Or is would it be best for me to just stick with the traditional solution alone?
Also, I've heard that synthetic motor oil works well, but I'm yet to try it.