BTW it could be oil but also look for intake system leaks which cause nearly all of these issues. The only thing the makes me wonder about oil is the sudden smokescreen.

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

LTB00513 which is for exhaust smoke for MY11/12 4.4TDV8 mentions in the condition summary that apart from the customer complaining of exhaust smoke that the customer may also complain that the message DPF Full - visit dealer may occur without any prior warning that the DPF is getting full.

Well I put the kettle on, grabbed the biscuits and settled down for the long read. By the time I had finished it was raining but the contents of what I read did get me thinking, so I grabbed my diagnostic tool and headed back out to the car. In my list of options for the DPF was one for replacement, I already had the red light showing on the dash and was in limp home mode so decided I would just bite the bullet and see what happens. I followed the diagnostic instructions and set the DPF to new, the red warning was still there so I cleared all the fault codes and the red warning had gone. So now I needed to force a regen of the DPF, the option is on my list but when I tried earlier it didn't seem to do anything. With nothing to lose at this point I decided I may as well head out to the motorway and see if any faults flag up. It's 30 minutes to the nearest petrol station so that was the first journey, to make sure I had plenty of fuel. On to the motorway next and I stopped at the first services which is no more than 5 miles from the petrol station, here I read the soot levels and found a reading of 2.76g. I set up the diagnostic reader and went to the DPF regeneration option and again followed the instructions, except this time I decided not to hit the final enter button until I was doing 65mph. I left the diagnostic tool plugged in and drove another 22 miles to the next services, I parked up and looked at what the diagnostics had to say, this time the message was different. It informed me that I needed to put the car in to park, confirm, then ignition off, confirm, ignition on and finally a message telling me the regeneration was complete. Did it actually do anything? To be honest I don't know, fuel consumption was low at just over 24mpg so maybe it did. I checked the soot readings and had 3g showing. I was debating at this point wether to do another forced regen or just leave it. I decided to leave it and headed back to the first services to do another soot reading, this time I was just under 4g of soot. Still no error codes found and no messages on the dash so I headed home. Once home I carried out another soot reading and as you can see below it showed 4.95g.
Once my IID tool has arrived and I have had a chance to familiarise myself with it I will carry out the same journey except this time I will monitor the exhaust temp to see if I can confirm a regen that way. I think my diagnostic tool will do this but it's a bit cumbersome to try to balance anywhere and the lead coming out of the OBD port keeps catching on my foot.
I wouldn't encourage anyone else to go and do as I have done because as yet, I still don't know what the long term consequences may be, it could be that all I am doing is adding to the soot levels that were already present, thus blocking the DPF even more. As it's my car I decided to take the chance and obviously the responsibility if it all goes belly up.

Have similar prob but with mine after start up especially left over night for first 3-4 miles plumes of blue smoke then eventually clears and no matter how u drive it after warms up theres no smoke checked today and double outlet drain present on secondary turbo. Anyone able to help be really appreciated.might add noticed recently on start up slight shiver or mild vibration but only lasts 5 seconds or less

dennij I could be miles off but is the coolant temperature up to normal running?
I know the TD6 BMW engine has thermostats that fail and cause the car to cool down when on the move because the radiator circuit is always partially open.
On my TD6 I have this at the moment and if it cools sufficiently (which is easy in this weather), the FBH will kick in to assist with warm up. The only way I notice this happening is when I come to a halt and see puffs of smoke from under the front, very much like you describe, although not plumes of it.

While you have your diag in hand just check the coolant temperature during a run.

dennij you have tricked your computer and fair play
the soot grams level is a calculated number rather than an actual reading.
The main (but not the only) reading this calculation is based on is the pressure differential.
What is that reading?

If at idle it's 0.9v or above then your DPF is actually full as your now cleared soot level was saying.
Normal idle level should be 0.7v

You now really need to do a forced regen that you know has worked. You need to see the exhaust temps to do that so if your Hawkeye can't show you then your IIDTool can.

But there is something filing your DPF that you need to find.

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

@roi345 Temperature readings are at the correct level. If I remember correctly it’s showing around 98 degrees on the live values.

Greg yes definitely it’s just a case of fooling the readings for now and I’m waiting for the IID to arrive so I can carry out a proper check to see if a regen takes place according to the exhaust readings and I will update the thread with those. I’m currently away so cannot check if the Hawkeye can do this too so may take a look and see. One thing I did notice when I removed the engine cover was a light misting of oil covering the the oil filter surround and the plenum donut in the same area. I wouldn’t expect to see any here at all so will need to wipe this over and see if it returns. I also noticed that the oil level reading shows as overfilled, I had a service around 1,000 miles ago so either the garage has overfilled it or perhaps some diesel has got in to the oil. Next thing to do is vacuum out about a litre and see what the readings are. If it’s below max I will monitor and see if it creeps up again.

A big thank you to everyone who has read or contributed to this thread. Hopefully I can get to the bottom of this in case some or all of the info here is useful to others

When you get your IID, check your live values (TDV8 engine) for fuel in oil dilution. Mine was reading 12.1 (should be much less - upper limit is 7!!) and I got an early service reminder, then a red DPf, restricted performance etc. Ended up having the DPF cleaned and then the Inlet manifold changed (cracked on Pax side. Tiny hole but major impact)

If your car isn't regenning properly then the Diesel which it pumps into the DPF to get temps up gets into the Crankcase and dilutes the oil. This is one signature of not regenning correctly.

Have you had a hi pressure smoke test done? My inlet manifold hole was minute but had an effect.

Hi Dolphinboy thanks for the advice I’m hoping to get to test the live values next week. I haven’t had a high pressure smoke test done yet but can see the value in that so will check with my Indy to see if they can do that

Received the GAP Tool on Monday but have been told by Boris that I can't go around driving for the fun of it just now so I guess some of my testing will have to wait.
I did manage to get these live levels checked whilst on the drive though, hopefully these results are what people were looking for? If not any pointers in to what you would like to see let me know and I will pop out and add them

Click image to enlarge

6.77 = DPF soot. Value is nice a lowish - nowhere near 17

PS Yes, listen to Boris. He's right on this  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Hi Dr Rob, it's a bit of a bind not being able to do some test runs but I'd rather follow the current advice and wait for everything to be over. It's not like I need the car just now as I have another I can use.

your soot level is low so that's fine. just be aware that LR cannot do a forced Regen over the level of 28.5g.(however My Dynaclean guy did and reset all the faults, including a RED DPF code and restricted performance (RP)

Be prepared to do an oil change soon. The cut off level is 7. I had 12 and an oil change allowed my car to regen again for a while (cracked Inlet manifold meant it soon sooted up )

Hi Dolphinboy, yes the soot level looks OK for now but I will keep an eye on the oil especially as 7 is the cut off. Looking forward to getting it back out on the road for some proper testing but will have to wait for the all clear from the government.

It's been a while but I finally took the FF out for some testing yesterday, although I feel somewhat confused by the outcome. I left home with an inferred soot level of 19.9 so was definitely due a regen, 3/4 of a tank of fuel so no problems there. Set the IID to monitor soot, exhaust gas temps on bank1 sensors 2 & 3 (missed out sensor 1 by accident) demanded regens, successful regens, oil dilution and DPF sensor voltage. According to the IID my number of demanded regens was 7 and my successful regens were 2. It takes me around 30 minutes to get to the motorway using a mixture of 30, 50 and 60MPH roads, during this journey the soot level increased to 21g and the gas temp levels would increase were the run was long enough. On to the motorway and set cruise to 65 and watched as the gas temps went up, sensor 2 was somewhere in the high 400's and sensor 3 was varying between 600+ and 575 depending. Now I expected to see the soot level begin to decrease, however, it was actually going up. After around 15 minutes the soot level was 22.4g so I decided to pull off at the next junction. Going around the small roundabout at the top of the slip road and then rejoining saw the soot level drop to 19.7g so I assumed I had pulled off to early so extended the return journey on the motorway for another 30 minutes. Gas temps again were good with sensor 2 hitting 630 but still the soot level wasn't going down but had increased, albeit to 20.0g so after a 45 minute journey I headed home. Now it gets weird. I'm back on a mixture of roads doing 30, 50 & 60 but after each time I slow down for a roundabout my soot level drops a small amount. By the time I got home I was down to 15.4g so it would seem that the long run with what appears to be the correct gas temps nothing really happened but when going slower and a bit of stop start it actually dropped. The other oddity is that my demanded regens still show 7 but my successful regens went up by 1 to show 3. My oil dilution also increased as I would expect with a regen too. The DPF sensor voltage also seemed to be showing correct hitting a peak of 0.9 and around 0.757 at idle. I have it booked in for a high pressure smoke test in a couple of weeks but am still stumped as to why the soot level only went down when off the motorway.

I guess it could only happen to me  2011 TDV8 Vogue SE