bignastyid :
Water is a much better at cooling than anti-freeze. Cars use anti freeze and water because water freezes and ice can damage an engine, you add anti-freeze to the water(usually 50/50) to prevent this, hence the name anti-freeze. So unless you plan on running the cooler in freezing temp anti freeze is a bad idea. Custom loops use either premixed coolants or distilled water plus additive(usually contains anti algae and anti corrosion components). The fact the guy in the video used straight up automotive antifreeze(which you don't want to even do in a car) has me seriously doubting their competency when it comes to liquid cooling.
If your cpu is overheating I highly doubt it's an issue with the liquid in the cooler. If the pump is plugged into the motherboard see if you can get a fan RPM for that fan port in the motherbaords bios that will tell you if the pump is running. Also make surer the radiator has good air flow, if it has poor airflow it will cool poorly.
I do wish to thank you for the assistance. It is my brother's PC, he smokes, and it was disgusting. He's 68, so there is no changing him at this point. Had to clean the nicotine off the whole insides, 3 hours, my wife wouldn't let it in our house.
You're suggestion could very well be right. The temp seems to be constant with just the Windows OS is running, but, when he starts a game the CPU runs at 100% and the temp climbs eventually shutting down the system.
I'm having it brought over here tomorrow and I'll check the CPU fan speed to see if I can see if it is working or not.
Again, thanks for the help.