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does that stuff inhibit freezing? If not are you going back to glycol coolant in the fall?
I've been following some threads on Stewart components web site and they advocate running water + rust inhibitor from Prestone or Zerex. I'm doing it and along with their pump I'm running 30-40 degrees cooler.
They sell Water Wetter in Canada. I don't know what shipping to MB would cost, but you would avoid duty & brokerage from Summit. I'm running Water Wetter with about 25% antifreeze & 75% water. I can't say for sure how much cooler the engine runs, as I made a few other modifications at the same time. I drove the car all winter as long as there was no snow/no salt on the roads. The car is parked in an attached garage, and I haven't had any problems with freezing in southern Ontario. That said, you get MUCH colder winters than we do. Good luck.