[Sproket]

Im using Epox's USDM. I have used that always, not saying that its right but it does work and it knows when something is getting hotter or cooler.

I kind of think of a car, when you sit at a stop light in the summer your engine starts to get hot and when you start driving it cools off.
But that cant be true for water cool systems because you have the same pressure and flow rate all the time.

Im willing to bet that if I take my system apart and clean it out and get rid of that purple ice it will be back to normal. Higher load temps that is.

Strange