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Hi..there..Your no doubt correct in regards ***** ***** oil level is actually Diesel - if the oil smells strongly of diesel then its either a combination of either continued fail regeneration/constant DPF regeneration cycles in regards ***** ***** DPF "if fitted" - Or your issue is on the injection system is at fault either HP or one of the injectors is dumping/too much fuel and thus causes bore wash..which means excess fuel passes the rings and ends up in the oil sump..normally with failing injectors you would get a alot of smoke out the back/missfire/pinking issues...Another could be loose or leaking HP supply tube to the injectors as these pass through the rocker cover..might be worth checking that..When DPF regeneration occurs normally the fuel is increased a fraction to help aid bringing the DPF temperature up to burn off the soot captured..but this is of course dependant on the vehicles use and the DPF iself and the levels calculated saturation that of course needs to be checked using diagnostic equipment to see those values and wether the DPF itself is the problem causing those failed regens or through vehicle use in that the basically the vehicle isnt used long enough for it to complete the regen cycle..and thus the DPF soot content will continue to rise until the point at which even a forced regeneration wont help..resulting in replacement of the DPF filter..but before any forced regen is done the oil/oil filter has to be replaced as having the level that high as you mention isnt good for the engine you can potentially cause increased crank pressure/blow a seal or drown the breather system.....I do hope this helps
Unfortunately you have not told me anything I did not know already. I know how the DPF works and the things you listed are all obvious to me. I was looking for more specific advise from someone who has experience of this vehicle who would say with some certainty exactly what it was.
Wow I never said you do not know what you are talking about.
I apologise if you think I have suggested it, as I most certainly was not.
As I said you just gave a list of what it could be. A list I could have made myself.
I have said the oil level has risen by 2 inches in the last 500 miles.
What I was hoping for was a specific answer. e.g. in my experience working on these cars it is usually XXXXXXX
e.g. with the amount of fuel in the oil it is unlikely to be XXXXXX I expect it is XXXXXX
I did send a reply but had no answer. Please respond
Thanks. That was helpful