Originally Posted by speed_demon
I recall a similar technical problem dealing with cooling at sub-zero temps and part of the solution was an additive like water-wetter (IIRC) in ethylene glycol. https://www.redlineoil.com/waterwetter
There are a variety of additives available for coolant. Maybe consider a two component solution to your problem? Just be certain it won't corrode or degrade anything in the loop. Ethanol is nasty nasty stuff notorious for degrading containers and will turn some plastics to mush in short order. Of course everclear is quite good in fruit punch. Haha.
Oh pook no... friends don't let friends drive modern GM products..
What about Dex-Cool? Turn my blocks into peanut butter lol.
As far as the ethanol, I think plastic in the loop would be limited to tubing (could find an ethanol-compatible type) and the pump itself. I'm not sure if a pump with plastic internals (D5?) could even handle these temps without cracking. The rubber seals on the pump could be an issue. I would probably need a stronger pump for either of the glycols.
The 3M Novec I've heard it's hundreds of dollars
So far I've got $0 into this, the dehumidifier was a "gift" from the previous owner of my home lol.
This is for test bench setup only, will not be used on my sig rig, so not too worried about killing stuff