Current machines are shipped with a blue coolant. Pentofrost Blue (or the OEM equivalent) is what goes in almost all Asian cars. It's formulated with anti-corrosives specifically designed for (aluminum) alloy engine parts.
Consider this: There are only two things in your (closed) coolant system that are likely to corrode (since the radiator is plastic along with (presumably) any pump parts that come in contact with fluids). One of these is the brass barbed fittings and the other is your spindle. The flow of liquid through the system creates an electrical current conducive to galvanic corrosion between two dissimilar metals. The brass is more cathodic than the aluminum alloy in the spindle. This means that the spindle becomes the "sacrificial anode" (which "plates onto" the brass).
It stands to reason that you'd want to use a coolant designed to protect the alloy. You can witness this (almost) in real time action by observing the effect of putting un-anodized aluminum in a dishwasher...the darkening and streaks are actually indicative of the galvanic corrosion that is taking place...with the aluminum cookie sheet "losing out" to the stainless steel flatware or the tub of the dishwasher itself.
That is auto antifreeze. It is not even close to what is recommended, which is RV/Marine antifreeze. Axiom has specifically NOT recommended auto antifreeze.
Gerry - I've edited my original post, but not for the reason you gave. There are auto antifreezes that are propylene glycol based and, per Axiom these are fine. It's sometimes hard to determine what's in what, but you're safe with the RV/Marine stuff because it's made for freshwater systems and would NEVER contain ethylene glycol (which is poisonous to man and beast). My error was in identifying Pentofrost as being ok...I got erroneous information and later discovered that it is ethylene glycol based and NOT SUITABLE FOR AXIOM USE.
Please edit your post to eliminate the link that you quoted from my original post so that nobody clicks & buys it in error.