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How long to wait before adding coolant please?
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John C
 


Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3291

United Kingdom 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3
How long to wait before adding coolant please?

Been driving on Autoroute for 20 mins and got low coolant warning. Pulled over. Sorry for the daft question, but how long should I wait before adding coolant please? Thank you!
 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years 
 
Post #207706619th Aug 2019 11:10 am
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10463

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

I don't claim credit for this:-

Unscrew the cap on the coolant/antifreeze reservoir - protect your hands from hot water & steam.
If it is boiling wait until it settles
Start the car.
Let it tick-over until the fan comes on.
Turn your aircon up as hot as it can go. ...
Turn your aircon's fan up to full blast.
The coolant temperature should now drop
If so watch the coolant reservoir, and top up slowly
The anti-freeze level may go down as it replaces the trapped air that escaped.

If you top up with water don't forget to get the anti-freeze concentration correct as soon as possible.

Investigate & rectify the cause of the overheating.

NJSS
 Am I Gammon or Woke ? - I neither know nor care.

2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t. 
 
Post #207706919th Aug 2019 11:23 am
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John C
 


Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3291

United Kingdom 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

Thank you v much!!! Bow down Thumbs Up done
 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years 
 
Post #207707419th Aug 2019 11:49 am
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John C
 


Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3291

United Kingdom 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

This advice was so useful - thank you. Crazy dash to the ferry but got there just in time. Got low coolant warning every 30 mins and had to top up and managed to get sorted thanks to this. For anyone interested, they will still let you on the Zebrugge-Hull 1900 sailing at 1815... squeaky bum moment!!!

Thanks again!
 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years 
 
Post #207717119th Aug 2019 4:47 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10335

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

how much have you been adding ?


sure its not a faulty sensor ?
  
Post #207717619th Aug 2019 4:59 pm
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John C
 


Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3291

United Kingdom 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

Loads! Def not a sensor sadly!
 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years 
 
Post #207717719th Aug 2019 5:01 pm
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