>when airtight, the whole thing looses it's thermal properties and starts overheating again Were you pumping the fluid through radiators? It doesn’t really sou

>when airtight, the whole thing looses it's thermal properties and starts overheating again Were you pumping the fluid through radiators? It doesn’t really sound like you were, which would be the obvious reason it would overheat. You have to actually transfer and dissipate the heat. What makes the immersion cooling so good is that it conducts heat so much better than air, you can add giant radiators and dissipate an ungodly amount of heat, so can run your equipment ungodly fast. You can’t just drop it into an aquarium of mineral oil and expect it to do much.