Advertise on DISCO3.CO.UK
Forum · Gallery · Wiki · Shop · Sponsors
  Home · FAQ · New Posts · My Posts · PMs · Search · Members · Members Map · Groups · Profile · Donate · Register · Log In  
DISCO3.CO.UK > Technical (D3)

Flushing the cooling system and renewing coolant
Post Reply  Down to end
Page 1 of 1
PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4
Flushing the cooling system and renewing coolant

Hello,
I am about to change the coolant and flush the system. Doing that, I want to get all old coolant/flush water out so I can fill with premixed new coolant. Reading the workshop manual it says to empty the system, remove bottom radiator hose and also the hoses for the rear heater. From this information I have two questions. 1.) How do I know if I have a rear heater? 2.)Will emptying the system just by removing the lower radiator hose (if I lack a rear heater) result in a totally empty system? If not there will be some flushing water left in the system. If that is the case could I just fill with the right amount of concentrated coolant and end with filling up with water letting the coolant mix itself over time?

Thanks,
Peter 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep  
Post #149460029th Jun 2015 7:07 pm
View user's profile Send private message View poster's gallery Reply with quote
markthegad
 


Member Since: 06 Sep 2009
Location: Newcastle
Posts: 636

United Kingdom 2005 Discovery 3 TDV6 SE Manual Java BlackDiscovery 3

What I done was took the top return hose off and let it run which pumps it round, which will pump out of the top hose while filling up wigh water at same time, then you will have clean water in system, then put coolant in same way which will mix, that worked for me Thumbs Up  
Post #149461229th Jun 2015 7:14 pm
View user's profile Send private message View poster's gallery Reply with quote
Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20836

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

As above Thumbs Up

Mix the new water and anti freeze 50:50 though, so you know it's the correct strength when going int My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #149462529th Jun 2015 7:23 pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

Thanks for your answers! I am changing the waterpump so I need to empty the system. I also want to flush the cooling system by using a garden hose and flush it as good as I can. So the question remain. Will the system be completely empty when using the "by the book" method so I can refill it with 50 % coolant or do I need to assume there are so much water left in there so it actually lowers the coolant to water ratio?

Best wishes,
Peter 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep  
Post #149470429th Jun 2015 10:02 pm
View user's profile Send private message View poster's gallery Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
< Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO3.CO.UK Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums
DISCO3.CO.UK is independent and not affiliated to Land Rover.
Switch to Mobile Site