It’s hard to beat water as a coolant,
First and foremost most it’s available just about everywhere.
Your engine /radiator will work with water as a coolant for 20 to 40 years,
In that time you will change it several times for various reasons.
If you worried about corrosion then us an additive.
That is compatible with you engine
Ie iron or aluminium,
We see all sorts of mmmm improvements that are promoted by their manufacturers.
What I ask myself when these producers are presented is,
Who benefits the most when this is purchased
Bfit