 | Home > Technical > coolant bother - number 10009485937 |
 
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6772   
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Have you replaced the coolant reservoir cap? The seal can go on these and leak out when hot. Cheap to buy just to rule it out. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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30th May 2017 10:56pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20839 
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Normal characteristic, nothing to worry about.
Replacing the cap would be a good idea all the same. _\Hennessey|Venom| F5/___ ___\⭐️Lone|Star|State/___ ____\We|Will|Win/___ ____/🇬🇧🇺🇸\____ _//*⛽️🛢️⚙️🧰*\\_ |
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30th May 2017 11:08pm |
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| Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2342 
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Erm, I beg to differ Steve, losing that much coolant is certainly not a normal characteristic, it indicates there is a problem. No engine routinely loses coolant at that rate !
Mo The Land Rover 90 - Many are called, few are chosen. 50 Shades of Pennine Grey |
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30th May 2017 11:33pm |
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| Jonathan111 Member Since: 22 Jan 2015 Location: London Posts: 67
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thanks all, it certainly is p**ng away a ton of coolant and no obvious egress. I suspect its P-gasket but if so, would expect to see trace, my q is whether OAT coolant leaves this trace - suspect, it is only IAT (the old style coolant), because it is full of silicate, which *would* leave a trace - silicate is more or less like kettle scale, so bound to show up when dried on leaking P-gasket.
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30th May 2017 11:47pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20839
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For some reason I was thinking 2mm not 2cm.
 
OAT does leave a trace, depends on colour of your coolant? I'd be taking a look at possibly split hoses and especially your coolant / Waterpump. I had issues with the Waterpump gasket on mine, started of not much and got worse pretty fast and coolant isn't cheap to pour away. Also not good for animals or wildlife if course. I doubt the radiator is the issue _\Hennessey|Venom| F5/___ ___\⭐️Lone|Star|State/___ ____\We|Will|Win/___ ____/🇬🇧🇺🇸\____ _//*⛽️🛢️⚙️🧰*\\_ Last edited by custom90 on 31st May 2017 10:47am. Edited 1 time in total |
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30th May 2017 11:56pm |
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| Jonathan111 Member Since: 22 Jan 2015 Location: London Posts: 67
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thx - will continue to research, the stuff is going somewhere, that's for sure!
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31st May 2017 12:01am |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816  
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Not sure I understand that even loosing 2mm in the expansion tank every 100 miles would be normal. I think only normal is that nothing gets lost, period. It is a closed circuit. I hope it is just the so often blamed cap here. I never lost a drop so far in 9 years. Eric You never actually own a Defender. You merely look after it for the next generation. http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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31st May 2017 4:53am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17781 
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On three occasions I have suffered from coolant loss at rates approaching those you describe.
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31st May 2017 8:35am |
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| Scotm Member Since: 28 Feb 2014 Location: Aberdeenshire Posts: 685  
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I assume as you mention the p gasket your engine is a 300 tdi?
If so another source of leak might be the expansion tank itself. The original black ones had a habit of splitting a side seam and leaking out there. |
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31st May 2017 10:16am |
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| Jonathan111 Member Since: 22 Jan 2015 Location: London Posts: 67
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belated thanks to all for posts on this, there's a new development, which I'll start a new thread on, many many thanks to all, cheers, Jonathan
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18th Jun 2017 12:03pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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OAT still leaves staining, it's usually pink. The problem is the viscous fan disperses any leak so the staining isn't so obvious.
On a side note, you know you don't get charged by the letter for posting on here? e-tank, p-gasket.....  |
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18th Jun 2017 2:46pm |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5100 
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I had a leak in a 300tdi - took ages to find, pressure tests running etc etc etc.
Turned out to be a slight leak from the top radiator hose connection - adding a 2nd jubilee clip solved it. It only was noticeable when hot, and by chance i lifted the bonnet after a long drive with the engine on to do something else and found it. Cant tell you how many times it had tests, inspections etc...as it was dripping onto things it wasnt noticeable and didn't leave any tell tails! Mike |
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18th Jun 2017 5:00pm |
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