Well water is 100c and I believe vegetable oil is 300c ,so I don't think that would be a problem, One of the many oils was thinking of using but, I don't know if its something that can be used, like I said not much would be put in it like 5% of the reservoir at max just to give it a slight particle bubble effect. if it wouldn't leave the reservoir i wonder if it would give the same effects. I'm totally not committed to this idea until i got solid evidence it won't kill my PC.