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Seabreeze



Member Since: 23 Mar 2016
Location: Suffolk
Posts: 47
England 1996 Defender 90 300 Tdi CSW Epsom Green
Coolant fluid for a 300TDi
Hi All,

I need to top up my radiator with antifreeze/coolant. What type should I use, is the the blue or pink stuff, any particular brand?

Thanks
Post #853317 31st Aug 2020 9:58am
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htb2



Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529
Wales 
Mine runs on pink. You need to match it to whatever is in there at the moment, what colour is yours running at mo?
Post #853319 31st Aug 2020 10:14am
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Seabreeze



Member Since: 23 Mar 2016
Location: Suffolk
Posts: 47
England 1996 Defender 90 300 Tdi CSW Epsom Green
Mine is definitely pink!
Post #853325 31st Aug 2020 10:41am
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4206
United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
Apparently, colour is not a reliable indicator of the type of coolant in your system.


https://www.opieoils.co.uk/t-car-motorbike...ained.aspx 2007 110 TDCi Station Wagon XS
Post #853328 31st Aug 2020 11:10am
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Seabreeze



Member Since: 23 Mar 2016
Location: Suffolk
Posts: 47
England 1996 Defender 90 300 Tdi CSW Epsom Green
300 TDI Coolant
OK, so I guess it is back to the hand book definition: " Use an ethylene glycol based anti-freeze (containing no methanol) with non-phosphate corrosion inhibitors suitable for aluminium engines....."
Post #853329 31st Aug 2020 11:20am
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discomog



Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2526
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
If you can afford, drain radiator and block, flush with clean water and then fill with correct spec. That should give you complete peace of mind Smile Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8
Post #853396 31st Aug 2020 5:22pm
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L110CDL



Member Since: 31 Oct 2015
Location: Devon
Posts: 10742
England 
I use to have the pink stuff and was told it was no good for my engine (300 Tdi ) it had not been in for to long, so the system was flushed out and now i have a very dark green/blue stuff, right for my engine Thumbs Up 1996 Golf Blue 300Tdi 110 Pick up.

Keeper.

Clayton.
Post #853447 31st Aug 2020 8:29pm
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8619simon



Member Since: 04 Nov 2016
Location: North Wales
Posts: 247
Wales 1995 Defender 110 300 Tdi CSW Epsom Green
I recently had the same dilemma, as has been said colour is not a definite indicator of type. As far as I could work out it is a choice of OAT based or Non-OAT based. The main difference being an OAT based coolant will last longer, typically 4 years before needing changing, whereas a Non-OAT based coolant needs changing every 2 years and was used in older engines.

As I understood it there was or is a school of thought that OAT based was not ideal on older engines due to issues with some seals. To be honest I never really could find a definitive answer so I have opted for the Non-OAT based solution and change it every 2 years. Its not a big job and I figure giving the coolant system a good old clean every couple of years is no bad thing anyway. In the end I chose this; Bluecol Antifreeze 2 Year 5l - BLA005.

Not a very scientific approach I am afraid but a pragmatic one for me Smile
Post #853450 31st Aug 2020 8:36pm
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zippo87



Member Since: 29 Mar 2019
Location: Moray
Posts: 100
Scotland 1996 Defender 110 300 Tdi CSW Epsom Green
Same for me - so many opinions and information out there, it had pink, I went with what the manual said - happy to keep an eye on it and do it again. Think it was comma G40?
Post #853459 31st Aug 2020 9:03pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2224
United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
Ethylene glycol is the stuff. Usually blue but not always.
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #853534 1st Sep 2020 8:37am
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WarPig



Member Since: 04 Dec 2009
Location: Sheffield
Posts: 1748
England 1996 Defender 110 300 Tdi USW Bonatti Grey
I use this in my Defender 300tdi


Post #854504 5th Sep 2020 8:50pm
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BogMonster



Member Since: 05 Feb 2008
Location: Stanley
Posts: 400
Falkland Islands 2015 Defender 110 Puma 2.2 USW Corris Grey
L110CDL wrote:
I use to have the pink stuff and was told it was no good for my engine (300 Tdi ) it had not been in for to long, so the system was flushed out and now i have a very dark green/blue stuff, right for my engine Thumbs Up


My ROW spec 2006 300Tdi came with the pink OAT stuff from the factory (as did all the others) so that's wrong - they are quite happy with either just don't mix the two! I think they moved to using OAT at the same time the Td5 came out, presumably to simplify things on the production line where they were building Tdi and Td5 alongside each other. ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi
Post #854561 6th Sep 2020 1:13pm
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Mdm



Member Since: 11 Sep 2013
Location: Sunny Lancashire
Posts: 1599
United Kingdom 
TDI uses the regular blue stuff as above

td5 oat red/pink coolant

then you have purple and green for other makes like volvo...go figure.

as long as you dont mix the different types you will be fine.

just keep the strength correct.
Post #854592 6th Sep 2020 6:44pm
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Wolfie831



Member Since: 19 Feb 2021
Location: Derbyshire
Posts: 21
United Kingdom 1999 Defender 110 300 Tdi ST Nato Green
BogMonster wrote:
L110CDL wrote:
I use to have the pink stuff and was told it was no good for my engine (300 Tdi ) it had not been in for to long, so the system was flushed out and now i have a very dark green/blue stuff, right for my engine Thumbs Up


My ROW spec 2006 300Tdi came with the pink OAT stuff from the factory (as did all the others) so that's wrong - they are quite happy with either just don't mix the two! I think they moved to using OAT at the same time the Td5 came out, presumably to simplify things on the production line where they were building Tdi and Td5 alongside each other.


The issue with OAT coolants is when you may have upgraded to Silicone hoses, the Organic compounds breakdown the silicone over time and they WILL eventually fail. Only IAT (Blue) coolant is safe for use with the 300Tdi engine fitted with upgraded hoses.
Post #1031340 12th Apr 2024 9:53am
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L110CDL



Member Since: 31 Oct 2015
Location: Devon
Posts: 10742
England 
Yes that is why i changed from pink to blue as it started to delaminate the silicone hose from the inside out Rolling Eyes 1996 Golf Blue 300Tdi 110 Pick up.

Keeper.

Clayton.
Post #1031705 15th Apr 2024 8:07pm
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