Distilled+glycol if you have mixed metals

Distilled+silver(killcoil) if you dont have mixed metals.
Quote Originally Posted by zer0kewl View Post
so getting any kind off corosion is just imposible without corosion protection like when you got copper rad some nickel + bras fittings etc.

cous i'm thinking about going demi + killcoil atm ;P
Yes you wont get corrosion if you have stuff like copper, nickel or brass. Just stay away from aluminum.