If you read all the way to the bottom, they recommend to run the engine hotter than normal (turn fan off below 230F). This is to save pumping losses of the fan.
The 'system' uses propylene glycol. This in nothing special. It is commonly sold as 'safe' or 'green' coolant at auto part stores. P-G is a popular food additive to smoothen the surface of foods.
Running an open coolant system that depends on nucleate boiling is not good for a EGR engine. The air bubbles generated must be scrubbed out of the system. This is the purpose of the overflow bottle. Too many bubbles means your overflow bottle will overfill.
I would never recommend this system, It must void the warranty.
Running P-G on a closed system is OK, but might still void the FMC warranty...