[djomlas]

well depending on the temperature, on the bottle it said if you will have your car in up to -34 degree temeratures mix 50/50 coolant and distilled water, which is what i did.
if you will be in even colder cinditions it will show different mixture conbinations.

so you need certain capacity, now whichever way yo want to mix up your coolant/distilled water mixture is up to you, or better said the conditions you live in.

hope this helps