Anyone had a oil leak from a 308 HDi ?
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Thread: Anyone had a oil leak from a 308 HDi ?

  1. #1
    Fellow Frogger!
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    Default Anyone had a oil leak from a 308 HDi ?

    I have a 09 308 2.0 HDi auto that has done 80K mileage

    Has anyone had a minor oil leak ?

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    The symptom being a small amount of oil on the garage floor

    It is not obvious where it is coming from as it is not from the sump plug, oil filter or rocker cover

  2. #2
    Fellow Frogger! James504's Avatar
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    Rear main seal.
    2006 Peugeot 206 Xt
    1991 Toyota mx83 grande 1jzgte

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    Contented Peugeot Driver addo's Avatar
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    What's the root cause - rubbish seal, DMF failure, overboost, heat?

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    Thank you for the replies

    Quote Originally Posted by James504 View Post
    Rear main seal.
    It had better not be as I had it replaced 3 years ago under warranty !

    Quote Originally Posted by addo View Post
    What's the root cause - rubbish seal, DMF failure, overboost, heat?
    I don't know what is causing it yet as there doesn't appear to be of the symptoms you desribe

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    Check under the air doser. Oil from the turbo can pool in there and leak out of it.

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    Fellow Frogger! Mi16 Man's Avatar
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    My rear main seal has failed twice. Both replaced under warranty. MY09 XSE SW HDi

    Anyone had a oil leak from a 308 HDi ?-imageuploadedbytapatalk1416738580.695950.jpg


    MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
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    My first 307's hdi was the same rear main oil weep took up and no sign of a leak in the last 60,000 klm since changing to Penrite enviro +5 w . now 135'k
    The lower {plastic } engine shield needs taking of & steam cleaned or gernie ed as oil is stuck in the insulation and will contine to seep out for a time if weep hopefully stops with the use of Penrite oil.
    JPT .
    2 x 307 hdi 2006 + 2007

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    All thank you for your replies

    Quote Originally Posted by Psychlone View Post
    Check under the air doser. Oil from the turbo can pool in there and leak out of it.
    In the picture I have attached I had a look all around what I believe is the air doser but could not find any wet oil

    Where I have a label in the picture called air doser is that the same one you are referring too ?

    Note where I have a label called dry oil, is that the area you mean as there was dry oil there but not wet. Tomorrow I will investigate the patch called to be checked a I only notice that after the photo

    Anyone had a oil leak from a 308 HDi ?-img_20141124_193644-leak.jpg

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    May be Enviro + DL1 5 w 30 for a 308

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    Is the oil running down the back of the engine (firewall side)
    if so, could be leaking from just below the rocker cover at the back. There is a big plate that holds the cam in on 2l hdi's that sits under the rocker cover, so even though the rocker cover is not leaking, it could be leaking just out of site from this plate, hence making the leak hard to locate.

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    1000+ Posts Capago's Avatar
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    no no no!

    coming from a dealer garage its commonly misdiagnosed as a rear main. if you get under the car and look up past the gearbox onto the coolant hoses, if you see oil on them or the surrounding area up high it is the high pressure fuel pump oil seal, which mates to the head.

    it also leaks down through the gearbox, hence the misdiagnosis. Much less common are the sandwich plate on the head and the rear main if i remember correctly was replaced with a superseded part so that should have filtered through to cars under warranty
    The wrong oil is better than no oil at all.

  12. #12
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    Thank you all again for your replies


    Quote Originally Posted by cprrw132 View Post
    May be Enviro + DL1 5 w 30 for a 308
    That is indeed the oil I use hopefully it isn't causing the leak !

    Quote Originally Posted by Capago View Post
    no no no!

    coming from a dealer garage its commonly misdiagnosed as a rear main. if you get under the car and look up past the gearbox onto the coolant hoses, if you see oil on them or the surrounding area up high it is the high pressure fuel pump oil seal, which mates to the head.

    it also leaks down through the gearbox, hence the misdiagnosis. Much less common are the sandwich plate on the head and the rear main if i remember correctly was replaced with a superseded part so that should have filtered through to cars under warranty
    Below are some pictures. As you can see there is plenty of oil in the area that I believe is the junction between the gear box and engine ?

    As you can I did look up in the gap between the engine and gearbox above the axle and I can see a hose pipe, what it is I do not know but it did have wet oil on it but not as much as further down, could this be fuel pump oil seal you mention ?

    Anyone had a oil leak from a 308 HDi ?-img_20141128_170607-under-car-1.jpgAnyone had a oil leak from a 308 HDi ?-img_20141128_170953-3.jpgAnyone had a oil leak from a 308 HDi ?-img_20141128_171531-2.jpg

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    1000+ Posts Capago's Avatar
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    if its the rear main it will be confined to the gearbox area, it wont get thrown up like that. It looks like more at the gearbox end becuase the pump has a localised leak which can spread oil everywhere

    it is the high pressure fuel pumps oil seal, where it joins to the cylinder head (it is driven by the camshaft)

    Make sure you change the high pressure fuel pipe to the rail as they are intended to be tightened only once.
    The wrong oil is better than no oil at all.

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    Quote Originally Posted by Capago View Post
    if its the rear main it will be confined to the gearbox area, it wont get thrown up like that. It looks like more at the gearbox end becuase the pump has a localised leak which can spread oil everywhere

    it is the high pressure fuel pumps oil seal, where it joins to the cylinder head (it is driven by the camshaft)

    Make sure you change the high pressure fuel pipe to the rail as they are intended to be tightened only once.
    Thank you for the reply

    Sounds like you feel it is the high pressure fuel pump oil seal ?

    I won't be doing this work myself but I had a look at the Peugeot workshop manual and I see they estimate the rear main seal an approx 6.5 hr job and the fuel pump oil seal a 1.5 hr job

    Note the rear seal was done Dec 2011 under warranty [42K ago] so I'll be annoyed if it is that again !

    Now I need to decide whether I use a Peugeot centre or an independent [non Peugeot specialist] local, any thoughts ?

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    1000+ Posts Capago's Avatar
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    Yeah if there is oil up high then definately the pump. I believe they updated the rear main seal but i cant remember.

    dealer personally, they know whats required for jobs like this. Local mechanics may charge whatever.. my 2c anyway.
    The wrong oil is better than no oil at all.

  16. #16
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    ok I got the car back from a dealership today who kindly offered to look at no cost

    It is the rear main seal

    There diagnosis is that this is as a result of excessive carbon/gunk build up via the air intake and manifold as evidenced by a totally clogged intake intake air pressure sensor result in the engine not being a to "breathe" resulting in pressure on the main seal

    They are quoting an 11 hour job (5 out and 5 in and 1 to fit) for the rear main and a 4.5 hour job on the intake manifold (2 out and 2 in and .5 to clean)

    What are peoples thoughts on a] the prognosis b] the hours ?

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    Contented Peugeot Driver addo's Avatar
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    Why was the airspeed so slow in the intake, as to allow heavy deposit formation?

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    I'm a touch confused here. If it's the DW10B 2.0 HDI motor, the crankcase vents up through the head into an oil separator built into the plastic manifold on top. It's the boxy bit at the back, and has chambers and turns that will cause suspended oil to drop out of the airstream and fall back into the sump. It vents then via a hose into the air intake in front. Where is the blockage?

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    Fellow Frogger! Mi16 Man's Avatar
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    It's definitely a gearbox out job to complete but not sure if subframe has to be removed too etc. so 11 hours, maybe?

    I've had 2 seals replaced under warranty (thank you Allan Mackay Autos!) who mentioned the original (version 1) seals were a badly made part. Hence why they unknowingly fitted the bad part on my first seal replacement. That first replacement seal started leaking within 5000kms.

    2nd, tight as a drum and no leaks!


    MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
    "Take a Lion through a corner - FAST"

    Current Fleet;
    2010 308 XSE HDi SW [Vapour Grey]
    2010 VW GOLF GTI [Carbon Steel Grey]

    In the Family;
    2012 508 Allure HDi [Thorium Grey]
    2008 207 HDi XT [Bianca White]

    Past "Frogs"
    2008 308 XSE HDi SW / 2006 307 XSE HDi Touring / 2001 306 XSi / 2005 206 GTi180 / 2005 407 HDi / 2003 206 XT / 1993 SII 405 Mi16 / 1990 205 GTi / 2x 1985 505 GTi S1 / 1976 504 / 1982 20 TS / 1997 306 XR / 1992 205 Si

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    Quote Originally Posted by addo View Post
    Why was the airspeed so slow in the intake, as to allow heavy deposit formation?
    They have no offered an explanation for the deposit build up other than use of B20 biodiesel, which they admit is speculation


    Quote Originally Posted by seasink View Post
    I'm a touch confused here. If it's the DW10B 2.0 HDI motor, the crankcase vents up through the head into an oil separator built into the plastic manifold on top. It's the boxy bit at the back, and has chambers and turns that will cause suspended oil to drop out of the airstream and fall back into the sump. It vents then via a hose into the air intake in front. Where is the blockage?
    All they say at this stage is that there is excessive carbon build up [presumably on the air intake]

    What I am not sure of yet is that they link carbon build up to rear seal failure and some people are saying that is not possible


    Quote Originally Posted by Mi16 Man View Post
    It's definitely a gearbox out job to complete but not sure if subframe has to be removed too etc. so 11 hours, maybe?

    I've had 2 seals replaced under warranty (thank you Allan Mackay Autos!) who mentioned the original (version 1) seals were a badly made part. Hence why they unknowingly fitted the bad part on my first seal replacement. That first replacement seal started leaking within 5000kms.

    2nd, tight as a drum and no leaks!


    MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW

    How many kms have you done since your 2nd replacement ?

    My rear seal was also done under warranty at 32K, car is now at 82k

    It seems to be weak point of the 308s and that rear seal failures are not uncommon even the dealership said as much, surely one doesn't need to replace that seal every 40K or so ?!
    Last edited by xlink_nz; 13th December 2014 at 03:48 PM.

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    Fellow Frogger! Mi16 Man's Avatar
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    Quote Originally Posted by xlink_nz View Post
    They have no offered an explanation for the deposit build up other than use of B20 biodiesel, which they admit is speculation




    All they say at this stage is that there is excessive carbon build up [presumably on the air intake]

    What I am not sure of yet is that they link carbon build up to rear seal failure and some people are saying that is not possible





    How many kms have you done since your 2nd replacement ?

    My rear seal was also done under warranty at 32K, car is now at 82k

    It seems to be weak point of the 308s and that rear seal failures are not uncommon even the dealership said as much, surely one doesn't need to replace that seal every 40K or so ?!
    Around 20K kms so far. It was certainly a bad part, not the distance travelled.

    You should be right once your second seal has been replaced, as long as it's the 'version 2' seal.


    MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
    "Take a Lion through a corner - FAST"

    Current Fleet;
    2010 308 XSE HDi SW [Vapour Grey]
    2010 VW GOLF GTI [Carbon Steel Grey]

    In the Family;
    2012 508 Allure HDi [Thorium Grey]
    2008 207 HDi XT [Bianca White]

    Past "Frogs"
    2008 308 XSE HDi SW / 2006 307 XSE HDi Touring / 2001 306 XSi / 2005 206 GTi180 / 2005 407 HDi / 2003 206 XT / 1993 SII 405 Mi16 / 1990 205 GTi / 2x 1985 505 GTi S1 / 1976 504 / 1982 20 TS / 1997 306 XR / 1992 205 Si

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    So, really what is it causing it to fail?
    Wrong oil? Just general wear and tear?
    If its the oil - what oil should we should be using?
    (looks like mine is leaky too but cannot pinpoint yet - I need to wash it properly)
    Cheers
    AP

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    Fellow Frogger! Mi16 Man's Avatar
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    Quote Originally Posted by AlpineRaven View Post
    So, really what is it causing it to fail?
    Wrong oil? Just general wear and tear?
    If its the oil - what oil should we should be using?
    (looks like mine is leaky too but cannot pinpoint yet - I need to wash it properly)
    Cheers
    AP
    AP,

    The original spec seal fitted at the factory was a weak part.

    That's what I experienced.

    Oil-stick to 5W30 Low Ash, nothing more/less


    MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
    "Take a Lion through a corner - FAST"

    Current Fleet;
    2010 308 XSE HDi SW [Vapour Grey]
    2010 VW GOLF GTI [Carbon Steel Grey]

    In the Family;
    2012 508 Allure HDi [Thorium Grey]
    2008 207 HDi XT [Bianca White]

    Past "Frogs"
    2008 308 XSE HDi SW / 2006 307 XSE HDi Touring / 2001 306 XSi / 2005 206 GTi180 / 2005 407 HDi / 2003 206 XT / 1993 SII 405 Mi16 / 1990 205 GTi / 2x 1985 505 GTi S1 / 1976 504 / 1982 20 TS / 1997 306 XR / 1992 205 Si

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    an update - I tried a rear main seal repair additive but that didn't work. It has now been suggested it could also be the "seal in the main bearing cap" if not the actual rear main seal.

    time to book it in for the 10 hr job

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    Quote Originally Posted by xlink_nz View Post
    an update - I tried a rear main seal repair additive but that didn't work. It has now been suggested it could also be the "seal in the main bearing cap" if not the actual rear main seal.

    time to book it in for the 10 hr job
    What kind of rear seal additive was it?
    Cheers
    AP

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