Strip Out The Fans, Add 8 Gallons of Cooking Oil

My group of friends is doing a bunch of elementally-themed mods; one is doing wood, another is doing metal, and I'm doing "water".

After looking for methods of how to at least get the illusion of water, I came upon the article Strip Out The Fans, Add 8 Gallons of Cooking Oil. The article mentions deionized water and vegetable cooking oils; my question is this:

Given the success with the cooking oil, what about other oils? I had the idea of using mineral oil, but have no idea how a motherboard/processor would handle it. And what about dielectric fluid?

i did it with my sempry the temps were 30c idle 45c load now this is socket a 130nm so it did get that hot this was made before soi you know after i put it in a fish tank the temps dropped to 10c idle and 15 c load without a fan just heatsink without heatsink it shortcircuited on me my poor sempry(ill miss you)

what you dont believe me i did it last month!