>
>- They provide less heat transfer.
>- They may not provide adequate corrosion protection (to meet Mazda's
>specifications.)
>- Freezing temperature of these coolants is 10-20 percent higher than
>ethylene glycol-based coolants.
>
>For these reasons, Mazda recommends the use of an ethylene glycol and
>water mixture in the cooling systems of all Mazda vehicles."
>

What does it mean for one temperature to be 10-20 percent higher than another?

Neil