Along with what's already been said, do not pre-mix it 50/50. As stated, our system capacity is 9.4 qts. So drain what you can, flush with distilled water, and drain again. *Then* add 4.7 qts. of the pure coolant (not pre-mix). Top off with distilled water, bleed, and top off again with distilled water after running it 1/2 hour (not just idling - drive it around with some normal driving engine speed) and bleeding it again. By definition, you will then have 50/50 mix. That would be impossible adding premix into a system that is already partially filled with just water.
Once you have the system full and stable, then you can premix to have on hand to add if any needs to be added for whatever reason.
DO NOT just use any antifreeze. USE ONLY G-05. That would be from a Chrysler or Ford dealer (G-05 is Ford's official antifreeze too), or get Zerex G-05 from a parts store (careful - Zerex makes several types of antifreeze - make sure it clearly says G-05 on the container - may have to try several stores, or have one order it in). Mopar G-05 is reddish orange. Ford and Zerex is yellow. But same stuff.
Do not let the auto parts store guy tell you that Prestone All Makes All Models is the same. It may be OK, but has not been proven yet. Definitely do *NOT* get Prestone Extended Life™ (AKA DexCool™).
'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs