Member Since: 06 Nov 2017
Location: Liverpool
Posts: 77
Lower coolant hose oil leak
Evening clever people,
Was investigating an annoying knock from the front end and found an oil leak on the steering rack.
But it looks like it's coming from higher up.
What's your opinion on where this leak was coming from. I thought it might be from the lower intercooler hose. But it looks like it's higher up.
Thanks for your help!
Chris
15th May 2019 11:04 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13879
If it is the lower hose I have a new unused one I bought from Advanced Factors. £20 posted.New Defender L663 110 SE (known as Noddy!)
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No longer the Old Buses original owner
231,000 miles and counting
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Still original injectors and turbo
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BAS Remap, Allisport Intercooler and deCat
EGRs blanked
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15th May 2019 11:16 pm
DN D3 Decade
Member Since: 24 Jun 2006
Location: W.London.
Posts: 2293
That intercooler hose lower connection is quite a common place for an oil leak, and the one the other side There is generally some oil build up in there, and if the clip is not tight enough, it will leak and spread all over the place. Clean it all up and check the hose for condition, if ok, refit the hose and tighten the clip a bit more. It could also be leakage from the auto box oil cooler hoses that connect to the radiator higher up on that side, again probably clips need tightening up, and gearbox oil level may need checking also if loss is significant. D3 owned from new, P017 brake recall, BAS FBHIC, new FBH, LR013487 oil pump, new water pump. RRS front lower suspension arms. New suspension compressor/ relay. New Denso alternator. CuNifer rear brake pipes. New GKN rear propshaft. New HPFP belt & tensioner. New A/C Condenser.NO WARRANTY for many many years.
16th May 2019 12:03 am
chris-rutter
Member Since: 06 Nov 2017
Location: Liverpool
Posts: 77
Thanks Moo will keep it in mind!
DN, thanks for the response I will take the lower pipe of and see what the condition of it is. Will also see if I can get better access to the higher up pipe as well.
On a side note I thought there was no way to check the gearbox oil level?
Thanks
Chris
16th May 2019 11:31 am
DN D3 Decade
Member Since: 24 Jun 2006
Location: W.London.
Posts: 2293
You might be able to see and access the g/box oil cooler hoses (there are 2) from the top, near the coolant reservoir. The g/box oil level can be checked, but it’s a bit of a pain, the oil has be be at a certain temperature (IID tool handy for this), with engine running and fill plug taken out, then fill if necessary until oil comes out of fill hole.D3 owned from new, P017 brake recall, BAS FBHIC, new FBH, LR013487 oil pump, new water pump. RRS front lower suspension arms. New suspension compressor/ relay. New Denso alternator. CuNifer rear brake pipes. New GKN rear propshaft. New HPFP belt & tensioner. New A/C Condenser.NO WARRANTY for many many years.
16th May 2019 11:41 am
chris-rutter
Member Since: 06 Nov 2017
Location: Liverpool
Posts: 77
Morning all,
I swapped the hoses but the more I look at it the intercooler hoses look ok.
I can't find a diagram but is that pipe on the picture above a coolant pipe? It goes to the white unit pictured in the second image.
Also the last small house to be swapped - that behind the metal heat shield on the list image?
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There is generally some oil build up in there, and if the clip is not tight enough, it will leak and spread all over the place. Clean it all up and check the hose for condition, if ok, refit the hose and tighten the clip a bit more. It could also be leakage from the auto box oil cooler hoses that connect to the radiator higher up on that side, again probably clips need tightening up, and gearbox oil level may need checking also if loss is significant. 
