Re: anti freeze
The only reason that distilled or deionised are usually started is so that it's clear not to use tap water. In my neck of the woods tap water would kill the cooling system in weeks as all the timescale falls out.
Water is somewhat corrosive but doesn't need to be distilled etc to stop the corrosion. You could use tap water if you are willing to check pH balance, total dissolved solids and a couple of other things. But that's a faff unless you're running a water treatment plant.
Distilled and DI water will corrode your cooling system, but firstly you are not running pure water, you are adding coolant, and secondly the corrosion is slow. You'll sell the vehicle usually before corrosion is an issue. The bike will probably fall apart some other way first.
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