Originally Posted by calxfire
By the way you will need 4 gallons since the capacity is 15+quarts or liters (I forgot).
4 gallons of fluid, yes, but not 4 gallons of coolant.
2 gallons of coolant (see my post above for coolants that are acceptable).
+
2 gallons of distilled water.
You won't use it all, but you need more than 4 quarts of each, so buy the second gallon of each.
(This does not include water for flushing the system, if you choose to do so.)