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Car Forum / Land Rover Cars / February 2008

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P38 diesel oil leak/ oil usage

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Dave R - 01 Feb 2008 19:07 GMT
Evening all,

As some of you know from previous dramas, I have 1998 RR P38a 80,000
miles. Had it about 7 or 8 months.

When I bought it I changed all the oils and filters and has been
running ok since i've had despite a couple of teething troubles.

I month or two ago I noticed an oil leak but was not too bothered
about it as it did not seem to be using any oil. However, i've just
happened to check the oil while i was changing the diesel filter and
noticed that it's gone down from almost exactly "full" to just over
half. I suppose i had to put a mug full of oil in it to bring it up to
a more sensible level.

I am hope that the engine oil is leaking from the engine and not being
burnt.

The oil leak seems to be from the front of the engine, on both sides
and the oil the runs down the engine and onto the floor, say around
the area of piston number one. It also leaks a bit from the oil filler
cap which also runs down the side of the engine and i thought that
initially this was the cause of the oil down the side of the engine,
but now im not so sure....

I have put my palm over the open filler cap whilst the engine is
running and there doesnt seem to be much in the way of crankcase
pressure, although the engine was cold when i did this. I seem to
remember that I have done this in the past and have not noticed it. I
would not expect engine wear at 80K and judging by the condition of
the rest of the engine and vehicle the mileage appears to be genuine
and the service record was virtually up to date when i bought it.

I am tempted to buy a diesel compression tester kit and establish at
least that the engine itself is not worn and in general good fettle.

Anyone had oil leaks on the P38 diesel or have any ideas as to what it
might be.

Thanks in advance

Dai
Dave Liquorice - 01 Feb 2008 20:32 GMT
> However, i've just happened to check the oil while i was changing the
> diesel filter and noticed that it's gone down from almost exactly "full"
[quoted text clipped - 3 lines]
> I am hope that the engine oil is leaking from the engine and not being
> burnt.

Throw a mug full of water on the ground where the car parks and ask
yourself have I see that much oil. I doubt you have, it would make quite a
mess oil doesn't evaporate, soaks in a bit but generally just stays. You'd
notice large coloured rainbows if it was being washed away in the rain...

My money would be on it mostly being burnt. How many miles did it do to
use that much oil?

Signature

Cheers
Dave.

Dave R - 01 Feb 2008 22:06 GMT
> > However, i've just happened to check the oil while i was changing the
> > diesel filter and noticed that it's gone down from almost exactly "full"
[quoted text clipped - 15 lines]
> Cheers
> Dave.

I have a couple of problems with that. First one being my drive is
like a building site and you wouldnt notice any small amounts of oil.
Second one is that as the leak is from the top of the engine it's
unlikely that the oil would leak out whilst parked unless there was
about 10 gallons in it!

I'm pretty sure that its either being forced out whilst running either
being burnt or forced out the gaps!

I may have misled you when I said that it was being forced out onto
the floor. I was indicating the direction of travel of oil not that
there was a big pool of oil on the floor

I'm now thinking blocked crankcase filter, what you reckon?

Im also thinking of borrowing a diesel compression tester just to be
sure the engines not knackered

Dave
Dougal - 01 Feb 2008 23:03 GMT
>>>However, i've just happened to check the oil while i was changing the
>>>diesel filter and noticed that it's gone down from almost exactly "full"
[quoted text clipped - 35 lines]
>
> Dave

It sounds as though you're panicking over nothing!

If I read it correctly you've used about half the range between 'full'
and 'fill' over a 7 to 8 month period - that's nothing.
Dave Liquorice - 02 Feb 2008 21:23 GMT
>> Throw a mug full of water on the ground where the car parks and ask
>> yourself have I see that much oil. I doubt you have, it would make
[quoted text clipped - 3 lines]
> I have a couple of problems with that. First one being my drive is
> like a building site and you wouldnt notice any small amounts of oil.

A mug full isn't a small amount of oil when split on the ground, even a
rubble drive I think you'd notice it with visibly really oily lumps rather
than a few black stains.

A mug full over 6 or 7 months assuming 1,000 miles or so per month is
nothing to worry about. Now it might be worth having a think about keeping
an eye on the oil level if it was a couple of pints over that time.

> Second one is that as the leak is from the top of the engine it's
> unlikely that the oil would leak out whilst parked unless there was
> about 10 gallons in it!

True enough but if it leaks out with the engine running it still has to
drain down the outside of the engine...

Signature

Cheers
Dave.

Dave R - 04 Feb 2008 03:04 GMT
> A mug full isn't a small amount of oil when split on the ground, even a
> rubble drive I think you'd notice it with visibly really oily lumps rather
> than a few black stains.

You don'r know how big my drive is! ;-)

> A mug full over 6 or 7 months assuming 1,000 miles or so per month is
> nothing to worry about. Now it might be worth having a think about keeping
> an eye on the oil level if it was a couple of pints over that time.

Yes, cheers, as i mentioned in previous post, the past 6 months or so
were fine, its just been the last month or two that it has dropped.
Hence my concern

> True enough but if it leaks out with the engine running it still has to
> drain down the outside of the engine...

yes, but it doesnt sit in my drive with the engine running all day, so
its dripping out on the road i guess.

I have checked this evening and it doesnt seem to be leaking from the
filler cap anymore after a few miles. i will keep an eye on it. I
suspect that the innards of the breather may have been faulty

Cheers

Dave
EMB - 04 Feb 2008 04:56 GMT
> Yes, cheers, as i mentioned in previous post, the past 6 months or so
> were fine, its just been the last month or two that it has dropped.

Time to change the oil?  There's a fair chance that the oil is "worn
out" after the mileage you have done.
Nige - 02 Feb 2008 10:01 GMT
> Evening all,
>
[quoted text clipped - 38 lines]
>
> Dai

Thats not that much really you know. Try one of the VW 19tdi units of a few
years ago, you could use that much starting it up.

Signature

Nige, talking utter shite since 1967.

Focus ST3
Range Rover 4.6 HSE
Daytona SE

NIGE#1

Paul - xxx - 02 Feb 2008 17:24 GMT
> As some of you know from previous dramas, I have 1998 RR P38a 80,000
> miles. Had it about 7 or 8 months.

> However, i've just
> happened to check the oil while i was changing the diesel filter and
> noticed that it's gone down from almost exactly "full" to just over
> half. I suppose i had to put a mug full of oil in it to bring it up to
> a more sensible level.

You've lost a mugfull of oil in 7 to 8 months .. I used to put that
much into my S3 every couple of days and hardly noticed any leaks ... ;)

Check the oil filter is seated properly, and that the oil filler cap
has it's ring seal intact.  The amount you're 'losing' is next to
nothing, whatever engine it is.

Signature

Paul - xxx

Pete M - 02 Feb 2008 17:35 GMT
Accompanied by the sound of a chisel on slate Dave
R,<v8bobber@yahoo.co.uk> managed to produce the following words of
wisdom
> Evening all,

> Anyone had oil leaks on the P38 diesel or have any ideas as to what it
> might be.

If a Land Rover doesn't leak oil, there's none in it.

Signature

Pete M -  OMF#9
"Save your breath for cooling your porridge!
W&P Range Rover V8 Turbo
Scorpio Ultima 24v

Dave R - 02 Feb 2008 22:09 GMT
I probably have not been making myself very clear.

Like I mentioned, i have had the Rangie about 7 or 8 months. I check
the oil regularly. The engine has not used a single drop of oil in the
first six months of usage but the oil leak has increased along with
the increase in oil consumption. What i need to try and establish is
what is causing the oil leak. I'm pretty sure that it is in line with
what the engine is using. I was thinking along the lines of a blocked
breather, checked that this afternoon but was clear. In the end I have
taken the innards out to be sure and see how I get on with that!!

I have had numerous land rover over the last 15 years, using one every
day, as long as i could drive really; a series one, a series two, 3
series threes, two discovery tdis, a bobtail v8 2 door classic, a tdi
range rover, a class 5 fiddlebraked v8 trialler. and now this P38, so
i'm a fairly experienced Land Rover driver and am fully aware of the
leaky attributes. Thats the thing that doesnt sit right with me with
this one. All the previous LRs have leaked to a lesser or greater
extent, from pretty much everywhere but with the P38 the only thing
that leaks is the engine, and thats BMW!

Vehicles should not leak. Land Rovers included........
Pete M - 03 Feb 2008 04:03 GMT
Accompanied by the sound of a chisel on slate Dave
R,<v8bobber@yahoo.co.uk> managed to produce the following words of
wisdom
> I probably have not been making myself very clear.
>
[quoted text clipped - 18 lines]
>
> Vehicles should not leak. Land Rovers included........

I have to say, mine doesn't leak... anything. I check the levels on
everything on a very regular basis - this is about my 10th Rangie Classic -
and other than the fuel level nothing seems to go down. The diffs are always
full [1], as are the swivels, the cooling system, the hubs, the transfer
box, the braking system etc. The engine doesn't seem to use any oil between
services and even the greased stuff never seems to need much topping up. It
does seem to be a freak though.

The only leak its had was from the transmission cooler, and that very
shortly contributed to a very dead auto-box.

Where is the oil leak? If it's not burning it, it's got to go somewhere!!

Signature

Pete M -  OMF#9
"Save your breath for cooling your porridge!
W&P Range Rover V8 Turbo
Scorpio Ultima 24v

Nige - 03 Feb 2008 07:36 GMT
> The only leak its had was from the transmission cooler, and that very
> shortly contributed to a very dead auto-box.

Bill had one go on his Rangie Auto too, if we remember kids?

Signature

Nige, talking utter shite since 1967.

Focus ST3
Range Rover 4.6 HSE
Daytona SE

NIGE#1

 
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