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Welkman



Member Since: 02 Nov 2014
Location: Essex colchester
Posts: 326
United Kingdom 
Definitive TD5 flush and refill guide (coolant)
Hi Guys,

Slowly working through my 110's issues and need to flush and refill the coolant. I have been all over the place trying to work out the best way of flushing the system.

Could i put a hose in the expansion tank, pull a pipe going to the heater matrix and run the engine until its clear followed by refilling with oat coolant?

I am also going to need to add some UV dye to the system to find a small coolant leak (hopefully not the gasket).

I know this is probably really simple but I have read lots of contradictory methods for the job.

Thanks

James
Post #395210 2nd Feb 2015 6:43pm
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Tommo



Member Since: 19 Dec 2013
Location: Leicestershire
Posts: 830
United Kingdom 2006 Defender 90 Td5 Black LE Java Black
Hi
when I did mine I too researched how to do it but eventually decided to take the bottom pipe from the radiator and drained it that way. Got about 6.5-7 litres out that way and then refilled. There is a way of draining the coolant from the engine block but you need to take off the viscous fan and then the alternator and behind that is the drain plug but I decided against that. I did run some clear water through the radiator to flush it though.
Hope this helps

Tommo
Post #395292 2nd Feb 2015 9:21pm
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Welkman



Member Since: 02 Nov 2014
Location: Essex colchester
Posts: 326
United Kingdom 
Thanks Tommo, I would like to fully flush the system though so I will try the wipping a hose off technique if no one else comes along with a suggestion.

James
Post #395556 3rd Feb 2015 8:14pm
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JJ440



Member Since: 08 Nov 2013
Location: Geneva
Posts: 51
Switzerland 2001 Defender 90 Td5 SW Oslo Blue
Planning on doing the same this weekend.

Came across G13 coolant, it's Ethylene Glycol/Glycrine based so not OAT but H-OAT.

Manual says Ethylene Glycol based with OAT corrosion inhibiters.... would I be ok using the G13, what do you guys recon?

Also, is it really necessary to use distilled water?
Post #422150 9th May 2015 7:54am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
what about comma red anti freze super longlife
Pure concentrated ethylene glycol, silicate free with Organic Acid Technology.


distilled water would be better as no inpurites , but many don't bother and use tap water or clean rain water
that decision would be up to you !!!
Post #422155 9th May 2015 8:06am
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grumpy old git



Member Since: 16 Nov 2013
Location: United Kingdom
Posts: 153
United Kingdom 
I bought 25 litres of deionised water from Mole Valley Farmers, about £8. Well worth it IMO to keep the system as clean as possible.
Post #422246 9th May 2015 4:33pm
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JJ440



Member Since: 08 Nov 2013
Location: Geneva
Posts: 51
Switzerland 2001 Defender 90 Td5 SW Oslo Blue
Bought demineralised or distilled water (can't remember which) and G12+ spec coolant.

Any idea how much water will be left in the system after I've drained and flushed it with a garden hose, I will have to account for it if I want to achieve proper 50/50 dilution.

Can I flush it through the expansion reservoir?
Post #422577 11th May 2015 9:06am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
g12 is mainly a vw/audi antifreeze , and should not be mixed with any other coolant ( ment to turn like jelly if mixed )

just thought you would like to know

but really its best not to mix any anti freezes

think ? comma g40 is same as g12 , but you pay more normally for g12 as that's the number vw use for it
Post #422588 11th May 2015 9:59am
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Tommo



Member Since: 19 Dec 2013
Location: Leicestershire
Posts: 830
United Kingdom 2006 Defender 90 Td5 Black LE Java Black
Use genuine LR coolant, correct stuff and if you doing this yourself it pays for itself Thumbs Up
Post #422719 11th May 2015 6:36pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
They are plenty of makes that are the correct ones without paying land rovers premium prices
Post #422725 11th May 2015 6:52pm
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rsms



Member Since: 12 Jan 2013
Location: Home
Posts: 36
Slovenia 
I have used Ford coolant (Ford Super Plus Premium) as it is the same as adviced by LR (Texaco Havoline XLC):

Ford Specification WSS-M97B44-D
Contains Ethenediol, Ethylene Glycol
Pink / Orange Colour
Post #425178 20th May 2015 6:38pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 270
United Kingdom 
Just bought 5ltrs of Halfords OAT stuff and am picking up a britpart top hose bleed screw on the way home from work. Hopefully get job done this weekend as previous ownes seem to have just used water!

However, need to drop sump on my Series 3 this weekend and do some ant-rust stuff on its chassis as well, so might not have time till next weekend.
A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #425565 22nd May 2015 2:46pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 270
United Kingdom 
Hmmm Didn't get time to replace water with OAT ... however I now have a radiator dumping its contents due to a leak in the offside corner. Going to try K-Seal first but suspect I'm installing a new radiator Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #427747 1st Jun 2015 10:24am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
Seen a lot of k-seal used , never seen it work !
Post #427845 1st Jun 2015 6:20pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 270
United Kingdom 
Yeah! There is a voice at the back of my mind saying "Just change the radiator", it'll never work. Remember from by triumph spitfire and fiat 124 days that quick fixes never worked. If it puts it off for a mth or so that would be fine,
A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #427964 2nd Jun 2015 8:03am
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