flushing coolant - Ford Powerstroke Diesel Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 2 Old 09-17-2009, 11:30 AM Thread Starter
Powerstroke.org Rookie
Join Date: Sep 2009
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
flushing coolant

i want to change my coolant and haven't really ever "flushed" a coolant system. Does this mean drain it and run water through the radiator with a hose? And what coolant is recommended? The previous owner had a bottle of additive stuff he put in every time he changed the coolant. thanks

1997 cc lb 4x4 5 speed 20'' eagle alloys,tymar intake,diamond eye straight 4 inch w/downpipe,edge evo(soon to be wildman),8000k H.I.D's. Soon to come. 9 inch lift w superduty icons & shackle reversal. bilstein 5125 shocks,38 inch mickey thompson mtz, wildman chip and diy stage 1 injectors. possibly super duty hpop.
cams-76 is offline  
Sponsored Links
post #2 of 2 Old 09-17-2009, 12:01 PM
Premium Member
Join Date: Oct 2008
Posts: 692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
there is an International Harvester coolant that is red and concentrated. It does not require additive and is supposedly good for 300K.

as far as the flush, buy lots of distilled water. i used about 28 or so gallons to flush mine...cleaned out a grocery store and had to go to another.

when you drain the radistor thru the drain peckock you will drain 4 gallons. the total capacity of the system is 8 gallons.

drain 4 and add 4 gallons of tap water.
run engine until heat blows hot.
drain another 4 and add 4 gals of tap water
run to get heat
...and repeat.

keep doing this until you get clear water from the drain peckock....takes about 8 times or so but, that could vary depending on the cooant concentration you currently have.

after you get clear water from the peckock start the process over using the distilled gallons.
drain 4, add 4 distilled
run till hot

keep doing this until you've added all 28 gallons. at this point you should be pretty close to all distilled in the system.

drain 4 and add the 4 gallons of red concentrate.
this give you the 50/50 mix and you should be good to go.

sometimes air may get trapped in the upper heater hoses and you may have problems getting heat. you're up to your own devices to rid the system of air.
normally removing the hose that's the highest in the system will burp it.

keep a gollon of 50/50 mix for top offs.

it takes a while but is simple....thank NCHornet for the recipe

01 7.3 f350 CC/SB - chipless w/3:73s
TrueCool Transcooler
Walker BTM
Bilstien 5100s
Soft top
daveyburt is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome