Should I flush the coolant or drain and fill? - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Third Generation > MK3 Focus

MK3 Focus The place to chat about general questions, window tinting, exterior body, interior and lighting upgrades for the third generation 2012-Current Focus.

Search This Forum | Image Search | Advanced Search    
FocusFest

Like Tree4Likes
Reply




 
LinkBack Thread Tools Display Modes
Old 06-14-2017, 09:53 PM   #1
#dailydriven
 
Jburks's Avatar
 
Join Date: Feb 2014
Fan#: 145009
Location: Vancouver, WA
What I Drive: 2014 DCT Hatchback

Posts: 5,724
Points 18,313, Level 85
Points: 18,313, Level: 85 Points: 18,313, Level: 85 Points: 18,313, Level: 85
Level Up 93% Completed
Level up: 93% Level up: 93% Level up: 93%
Forum Activity 97%
Activity: 97% Activity: 97% Activity: 97%
FF Reputation: 17 Jburks Great Standing Member
Buy-Sell-Trade Rating: (2)
Should I flush the coolant or drain and fill?

So i've been reading about coolant changes and what's the best way to do it. I know there is another thread on here about draining the coolant and filling it back up but from what I read, that only gets about 40% of the coolant out. I know I can do that maybe a couple times a year or once a year and that it will probably keep the coolant clean. Is that the best option though? or should I be flushing it out?

from what i read on how to do a coolant flush, it consists of draining the coolant, then filling it with water, let it run until operating temp, drain again, repeat 2-3 times, then drain and fill with coolant. the problem i see with this is that you only get about 40% of what's in the engine when you drain it, so if you drain and fill with water 3-4 times then you will most likely have all water in it, so filling it up with coolant and just leaving it would give you a mix with more water then coolant. How would you go about making sure you had a good coolant to water mix? And all the how to's i saw, showed using a hose to do all of this but i was always told that hose water will cause rust. so am i supposed to buy a bunch of distilled water to do this? seems like a headache.


__________________
RS Intake w/green filter-Ford 63MM TB-Fswerks 4-1 header-Fswerks Stealth Exhaust-Focus Power Tune-COBB RMM- Steeda RSB

My Thread-http://www.focusfanatics.com/forum/ford-focus-builds-general-showroom/382642-ruby-red-build-thread.html
Jburks is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 06-14-2017, 10:28 PM   #2
#dailydriven
 
Jburks's Avatar
 
Join Date: Feb 2014
Fan#: 145009
Location: Vancouver, WA
What I Drive: 2014 DCT Hatchback

Posts: 5,724
Points 18,313, Level 85
Points: 18,313, Level: 85 Points: 18,313, Level: 85 Points: 18,313, Level: 85
Level Up 93% Completed
Level up: 93% Level up: 93% Level up: 93%
Forum Activity 97%
Activity: 97% Activity: 97% Activity: 97%
FF Reputation: 17 Jburks Great Standing Member
Buy-Sell-Trade Rating: (2)
after doing more research i found that it is definitely best to do it with distilled water, so got that. the part i'm having trouble with is that by doing a drain and fill with distilled water in order to get all of the coolant out you are then filling the whole cooling system with distilled water. All the how to's i read said to then just drain it out and fill it up with coolant one time and then you are good to go. i feel like you are going to have a bad mix of water to coolant that way though.

Coolant is not horribly expensive so i'm thinking the best way to do it is drain it out, fill it back up with new coolant, let it run until hot, then repeat with coolant 2 or 3 times. and then it should be mostly new coolant at that point.
__________________
RS Intake w/green filter-Ford 63MM TB-Fswerks 4-1 header-Fswerks Stealth Exhaust-Focus Power Tune-COBB RMM- Steeda RSB

My Thread-http://www.focusfanatics.com/forum/ford-focus-builds-general-showroom/382642-ruby-red-build-thread.html
Jburks is offline  
    Reply With Quote Quick reply to this message
Old 06-14-2017, 11:56 PM   #3
Old Phart
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Lockport, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 43,548
Points 31,918, Level 100
Points: 31,918, Level: 100 Points: 31,918, Level: 100 Points: 31,918, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 134 sailor Excellent Standing Member sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
Hose water vs. distilled water is a matter of how many impurities are in local tap water. Both are water and will cause rust, without inhibitors present in coolant.

As you mention, flushing at home with a hose means you then have to add coolant concentrate by system capacity listings (half capacity to get 50/50) then test concentration & adjust as needed.

IMHO for maintenance a partial change by drain/refill is preferable, adding premixed coolant to always have a good mixture without fiddling.

Save full flush/flush chemicals for problem situations, such as mixed incompatible coolant or an old car that never got a change and has obvious scale buildup.
Jburks likes this.
__________________
"Rubber Side Down"

S.R. #275
Focus Takeover #003 / Tarbo Fan #003
sailor is offline  
    Reply With Quote Quick reply to this message
 
Old 06-15-2017, 12:13 AM   #4
#dailydriven
 
Jburks's Avatar
 
Join Date: Feb 2014
Fan#: 145009
Location: Vancouver, WA
What I Drive: 2014 DCT Hatchback

Posts: 5,724
Points 18,313, Level 85
Points: 18,313, Level: 85 Points: 18,313, Level: 85 Points: 18,313, Level: 85
Level Up 93% Completed
Level up: 93% Level up: 93% Level up: 93%
Forum Activity 97%
Activity: 97% Activity: 97% Activity: 97%
FF Reputation: 17 Jburks Great Standing Member
Buy-Sell-Trade Rating: (2)
Okay, I'm at 36k miles now and it's a little over 3 years old so I'll just do a drain and fill with the next oil change.

Sent from my SM-G920T using FF Mobile
__________________
RS Intake w/green filter-Ford 63MM TB-Fswerks 4-1 header-Fswerks Stealth Exhaust-Focus Power Tune-COBB RMM- Steeda RSB

My Thread-http://www.focusfanatics.com/forum/ford-focus-builds-general-showroom/382642-ruby-red-build-thread.html
Jburks is offline  
    Reply With Quote Quick reply to this message
Old 06-15-2017, 04:09 PM   #5
Old Phart
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Lockport, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 43,548
Points 31,918, Level 100
Points: 31,918, Level: 100 Points: 31,918, Level: 100 Points: 31,918, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 134 sailor Excellent Standing Member sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
5 yr. coolant, so even with a partial change then you're staying ahead of it.
Jburks likes this.
__________________
"Rubber Side Down"

S.R. #275
Focus Takeover #003 / Tarbo Fan #003
sailor is offline  
    Reply With Quote Quick reply to this message
Old 06-18-2017, 03:12 PM   #6
Focus Enthusiast
 
stayboogy's Avatar
 
Join Date: Jun 2015
Fan#: 248321
Location: Nashville, TN
What I Drive: 2012 Tuxedo Black Focus SE Sedan

Posts: 143
Points 643, Level 12
Points: 643, Level: 12 Points: 643, Level: 12 Points: 643, Level: 12
Level Up 86% Completed
Level up: 86% Level up: 86% Level up: 86%
Forum Activity 36%
Activity: 36% Activity: 36% Activity: 36%
FF Reputation: 4 stayboogy Good Standing Member
Buy-Sell-Trade Rating: (0)
I think the manual actually says 6 years / 100k miles, whichever comes first, and then every 3 years after that.

honestly, unless you are doing a vacuum drain and vacuum fill on the system you're never going to get all the contaminated/old coolant out of the block or the heater core or get the system completely full. I've been through this with several modern vehicles, even with the large fill funnel and burping, it's never going to be perfect.

coolant system services should be done by a mechanic that has the vacuum tools to drain it and fill it. not only this but it's good to have the whole system inspected at the first change--both hoses, thermostat, and thermostat housing which is plastic on these foci and prone to leakage, and have anything replaced that might need to be.

you are likely to only get 80 to 90% drained and refilled without using a vacuum on the system and then you're engine temps are going to fluctuate, air will be trapped in the system and push the rest of the coolant back into the burp tank when the thermostat opens, and your heat will suffer performance issues.

just my $.02 from multiple experiences
stayboogy is offline  
    Reply With Quote Quick reply to this message
Old 06-18-2017, 11:54 PM   #7
w/ my magic bag
 
felixthecat's Avatar
 
Join Date: Nov 2010
Fan#: 80663
Location: The Jet city, WA
What I Drive: '05 Silver Sport Technologies

Posts: 23,370
Points 25,560, Level 96
Points: 25,560, Level: 96 Points: 25,560, Level: 96 Points: 25,560, Level: 96
Level Up 21% Completed
Level up: 21% Level up: 21% Level up: 21%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 81 felixthecat Excellent Standing Member
Buy-Sell-Trade Rating: (0)
This^^^
__________________
Introduce Mr. Torsen to the mix
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Bigger brakes then you- D23 crew- D-Tech- Sedan Revolution= #131
felixthecat is online now  
    Reply With Quote Quick reply to this message
Old 06-19-2017, 12:45 AM   #8
Trump 2016
 
pasta's Avatar
 
Join Date: Jan 2009
Fan#: 62350
Location: queens, NY
What I Drive: 2003 eap svt

Posts: 7,546
Points 22,276, Level 92
Points: 22,276, Level: 92 Points: 22,276, Level: 92 Points: 22,276, Level: 92
Level Up 93% Completed
Level up: 93% Level up: 93% Level up: 93%
Forum Activity 99%
Activity: 99% Activity: 99% Activity: 99%
FF Reputation: 10 pasta Great Standing Member
Buy-Sell-Trade Rating: (51)
Flush your system.
pasta is offline  
    Reply With Quote Quick reply to this message
Old 06-19-2017, 01:48 AM   #9
w/ my magic bag
 
felixthecat's Avatar
 
Join Date: Nov 2010
Fan#: 80663
Location: The Jet city, WA
What I Drive: '05 Silver Sport Technologies

Posts: 23,370
Points 25,560, Level 96
Points: 25,560, Level: 96 Points: 25,560, Level: 96 Points: 25,560, Level: 96
Level Up 21% Completed
Level up: 21% Level up: 21% Level up: 21%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 81 felixthecat Excellent Standing Member
Buy-Sell-Trade Rating: (0)
Drain a refill......He has 36k.
__________________
Introduce Mr. Torsen to the mix
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Bigger brakes then you- D23 crew- D-Tech- Sedan Revolution= #131
felixthecat is online now  
    Reply With Quote Quick reply to this message
Old 06-19-2017, 11:39 AM   #10
#dailydriven
 
Jburks's Avatar
 
Join Date: Feb 2014
Fan#: 145009
Location: Vancouver, WA
What I Drive: 2014 DCT Hatchback

Posts: 5,724
Points 18,313, Level 85
Points: 18,313, Level: 85 Points: 18,313, Level: 85 Points: 18,313, Level: 85
Level Up 93% Completed
Level up: 93% Level up: 93% Level up: 93%
Forum Activity 97%
Activity: 97% Activity: 97% Activity: 97%
FF Reputation: 17 Jburks Great Standing Member
Buy-Sell-Trade Rating: (2)
yeah, I'm only at 3 years 36k miles. I was wondering if I should wait until 6 years and flush it, or do drain and fills once a year as preventive maintenance going forward.

Sent from my SM-G920T using FF Mobile
__________________
RS Intake w/green filter-Ford 63MM TB-Fswerks 4-1 header-Fswerks Stealth Exhaust-Focus Power Tune-COBB RMM- Steeda RSB

My Thread-http://www.focusfanatics.com/forum/ford-focus-builds-general-showroom/382642-ruby-red-build-thread.html
Jburks is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What I Drive
Year, color, and model of your car. Example: 2003 Focus Centennial Edition Sedan
Name
Your real name.
City
State
Country
Insurance
Please select your insurance company (Optional)

Log-in

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
Display Modes

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



All times are GMT -5. The time now is 10:23 AM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum and Volvo XC90 Forum.




 

Search Engine Optimization by vBSEO 3.6.1