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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20294

United Kingdom 
10L but you need 11L to top up if needed when bleeding.

Inugel optimal would be ideal and this one is pre mixed not concentrate so you can pour straight in with no mixing or nasties in tap water.
https://www.opieoils.co.uk/p-903-motul-inu...ction.aspx

Not really a fan of concentrate that is mixed with water as really you need distilled water with that anyway.
But each to their own, mine runs a touch cooler with the pre mix wghen I sorted mine out a few years ago.

The link above also meets Ford / LR factory specs. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️
Post #767747 8th Apr 2019 9:04pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5665

2006 Defender 110 Td5 USW Zermatt Silver
I looks like your cap is definitely leaking, or doing it’s job and releasing pressure. Does level sit ok? On some Defenders I’ve had it’s always wanted to sit below the line, but has been stable there.

I am worried about the “bubbling in the tank” comment though.
Post #767762 8th Apr 2019 9:59pm
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arran jones



Member Since: 21 Nov 2016
Location: south west
Posts: 726

United Kingdom 
Ok thanks All,
@LandyAndy:
When i top the level up i obviously top it up the the max fill line when cold, but the level does drop a bit quicker than it should i reckon, atm its about an inch lower than the fill line and last time i topped up was early March,
The Bubbling inside the tank is an old problem, the cap wasnt letting enough pressure out so replaced the cap and that stopped...
I will order the cap that LRA reccomends👍
Its probebly been leaking for a while..i only noticed cus it has been parked on polished concreate for the weekend...it normally parks on a gravel/stone driveway which would be alot harder to notice a puddle of stuff Rolling Eyes
Post #767802 9th Apr 2019 9:43am
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arran jones



Member Since: 21 Nov 2016
Location: south west
Posts: 726

United Kingdom 
Im might get a anti-Freeze tester for the coolant to check every now and then to see if its the right strength..
Or does the strength part only really matter in freezing temps?
How do i read these testers?
Does each bubble represent a Temperature??


Click image to enlarge
Post #767893 9th Apr 2019 6:12pm
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HardCharger



Member Since: 03 Mar 2013
Location: Manila
Posts: 731

Philippines 2011 Defender 110 Puma 2.4 SW Stornoway Grey
Is your cabin heater coil OK or is leaking? My coolant levels dropped as well but no puddles, turned out to be the heater coil was bad. Since I'm currently in the tropics, there is no need for the heater. We just by-passed it and levels have been steady since.

Oh, also had to change the coolant reservoir cap and have the Iveco cap in reserve once the current cap croaks. Thumbs Up
Post #767941 10th Apr 2019 1:01am
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arran jones



Member Since: 21 Nov 2016
Location: south west
Posts: 726

United Kingdom 
The heaters work perfectly,
No sign of leaking
Post #767973 10th Apr 2019 8:27am
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arran jones



Member Since: 21 Nov 2016
Location: south west
Posts: 726

United Kingdom 
I checked the coolant this morning after i topped her up last night...still all good.
When the engine was hot it didnt seem to drip on the floor...although there was no drip on the floor this morning either when it was cold...
But it seems like it just drips onto the floor when the coolant is cold?
Post #767975 10th Apr 2019 8:30am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5665

2006 Defender 110 Td5 USW Zermatt Silver
I would try not topping up the reservoir, see what it’s standard level is. My previous Defs have often just settled beneath the full level, and always just stayed there. If the level continues to fall then you have a problem.
Post #768054 10th Apr 2019 6:47pm
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arran jones



Member Since: 21 Nov 2016
Location: south west
Posts: 726

United Kingdom 
Ok i will do that...
Thx alot
Post #768059 10th Apr 2019 7:11pm
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ajps72



Member Since: 08 Jan 2012
Location: Lima Peru
Posts: 105

2001 Defender 110 Td5 SW Chawton White
I put a level sensor on my tank, and it goes crazy with the level variations.

Lets start with a normal level when cold, light is off
It begin to warm up, and began to flicker
Full temperature light is off
When coasting down a long slope, the temperature drops a little and the light comes ON and stay On until heat back.
Next day the level starts LOW, light ON ( as if the tanks was pressurized, if I open and close the tank it will correct itself) and then turns OFF when it reaches the temperature.

I believe the level sensor is too high but the final point is that it varies almost an inch during normal work, if it goes lower then you should began to worry. Augusto

Defender 110 TD5 2001
Discovery 4 TDV6
Post #769673 22nd Apr 2019 10:37pm
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