I just did the flush and fill thing on a 2.1 engine.  Bentley says the
coolant capacity is 18.4 US quarts, or 4.6 gallons.  I filled and drained my
system several times and got 12 quarts out consistently.  I have now filled
and bled it, and have about 3.5 gallons in it.  So 1 gallon of coolant and
the rest water doesn't seem right.

Edward  (read the list and apply what you learn, and soon you can help others!)

>Date:    Wed, 11 Jul 2001 09:29:38 -0400
>From:    Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
>Subject: Re: new engine & bleeding
>
>I always add 1 gallon of undiluted antifreeze first, and then  top off with
>water.  The ratio ends up just about right.