Not the usual antifreeze question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-22-2018, 09:23 PM
Thread Starter
  #1
Jeeper
 
Join Date: Jul 2017
Posts: 24
Not the usual antifreeze question

I'm soon installing a new radiator in the 2009 JKU sahara. A crack in the plastic up tube on the drivers side has started to become a problem ( sidebar... JB weld worked for a few weeks to buy me time to order the OEM replacement)
The old radiator is filled with Prestone Green it is compatable and HOAT.
When the old radiator is removed, hoses drained... I understand there is still some fluid in the water pump, heater core and engine...
Question 1 - how much fluid is left? 1/2 gallon? a quart?
Question 2 - I am wanting to fill the new radiator with Zerex HOAT "approved"
are there any issues with the mixing of these two same
as I am not planning on a flush
Thx for the advise that is sure to come.

Scuba591 is offline   Quote
Old 03-22-2018, 10:52 PM   #2
Supporting Member

5-Year WF Supporting Member
 
TerryC6's Avatar
 
Join Date: Jan 2014
Location: Hesperia, CA
Posts: 7,155
I would not take the chance if it was me. Has I understand it the way to flush this system is not hard. Drain radiator, fill back up set heat to high and start the vehicle, I kept my radiator cap off doing this. Once to operating temp shut off and drain again. Repeat one more time and the system system should be pretty clear of coolant. You can always repeat if you still have color. You might also consider changing your radiator hoses. Even after just 4 years mine are pretty swollen.

FYI: I get to do this on Sunday I think if all my parts get here by then.

__________________
Terry

35" Baja MTZ P3's - Level 8 Tracker Pro 5 Wheels - Dynatrac ProGrip Brakes - MetalCloak 2.5" GC Suspension, 6Pak Edition - Griffin Attenuator - Artec Front Axle Armor - Nitro Axle Sleeves - JCR Vanguard Bumpers - Poison Spyder Brawler Rockers & Bombshell Diff Covers - RockHard 4x4 Skid's & Sport Cage - Genesis Dual Battery Kit with G Screen - SPOD - Zeon 10-S - VisionX headlights - Traildash 2 - Morris Mule Trailer
TerryC6 is offline   Quote
Old 03-23-2018, 01:38 AM   #3
Jeeper
 
rgreen65's Avatar
 
Join Date: Aug 2014
Location: S. Georgia
Posts: 6,250
Since you will be starting with a new radiator and only a little old coolant trapped in the system, I would just cycle water through it twice. Then put the proper amount of pure coolant in to reach the 50% coolant/water mix (based on listed capacity) and then top of with water to reach the 50/50 solution (unless you want it stronger). Then you should be good to go.
__________________
2003 Light Khaki TJ Rubicon, Manual, Soft Top
2015 Anvil JKU Sahara, Auto, Hard Top - Traded
2017 Chief JKU Chief, Auto, Hard Top
rgreen65 is offline   Quote
Sponsored Links
Advertisement
 
Old 03-23-2018, 07:02 AM
Thread Starter
  #4
Jeeper
 
Join Date: Jul 2017
Posts: 24
Thanks for the replies. I am guessing that maybe a few quarts are left in the system. I just don't know for sure.
Scuba591 is offline   Quote
Old 03-23-2018, 08:58 AM   #5
Jeeper
 
Join Date: Dec 2015
Posts: 42
Quote:
Originally Posted by Scuba591 View Post
Thanks for the replies. I am guessing that maybe a few quarts are left in the system. I just don't know for sure.
These are all good suggestions and if I may, its advisable to use distilled water in you mix, maybe it was mentioned and I missed it.

Does anyone know if the block has a drain on the Pentastar engines or the OPs I'm past the post and cant look back at his MY. Those are handy and really help purge the old stuff
Zippster is offline   Quote
Old 03-23-2018, 06:19 PM   #6
gat
Supporting Member

5-Year WF Supporting Member
 
gat's Avatar
 
Join Date: Feb 2017
Location: Delaware
Posts: 546
Buy a flush kit. They're pretty cheap. I attached a piece of old garden hose to the discharge tube using heat shrink. works good. keeps the mess to a minimum. run it until everything that comes out is clear. Drain it well, and use distilled water to mix the new antifreeze 50/50. You'll need to cut in a "T" to connect the flush hose (supplied in the kit, just follow the directions). Hang on to the discharge connection, especially if you hooked an extension hose to it, and you'll be able to use it again. (Antifreeze don't last forever. Good idea to flush and replace every few years)
gat is offline   Quote
Old 03-23-2018, 06:32 PM   #7
Jeeper
 
jgraz's Avatar
 
Join Date: Jan 2016
Location: Bordentown, NJ
Posts: 1,089
Through all my reading and research, draining the radiator and reservoir will leave roughly 50% of the capacity in the remaining areas. After you replace the radiator fill with distilled run to temp drain and repeat till your clear of color. drain the radiator and reservoir a final time and fill with undiluted coolant(not 50/50). Running a final time will leave you at recommended 50/50.

jgraz is offline   Quote
Reply

Tags
radiator

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 07:34 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.