Hi. This is my first new post in this forum and I appreciate there have been threads on this subject already, but they are old from what I can tell and not read anymore by the looks as my post to them had no replies. So, hoping there is some knowledge out there that may help with this...
The story starts last September when I had to have a new Turbo fitted (broke as starved of lubrication - I had let the oil get to sludgy ). Then in December I had a fuel filter failure. Just mentioning these things as not sure if related to the current issue:..
Last Saturday I had a warning light come on during a short journey and car went into limp home mode. AA diags said the DPF was blocked and to take it to a garage as they could regenerate it. The AA man also noted oil level was very high. As it was changed twice around the turbo failure period I presumed it had just been over filled. Anyway, local garage forced a regeneration a few days ago and cleared the warning light in doing so. Why the DPF didn't clear automatically I have no idea as I regularly do longer motorway journeys....I presume there is a fair chance it will happen again if the auto-process hasn't been working.
The garage also took some oil out (2 litres - so back to Max as it were) and said they would be very surprised if they overfilled it last time (been using them for years and they are very reliable and trustworthy). They did mention it could be leaking diesel, but unlikely, and made no relation to the DPF issue - which I have now read about - and the fact that forcing regeneration can cause diesel into the sump! Two days later, I have checked the oil and it has risen again - 5mm or so above the max line. What I do not know as I write this is if they took oil out before they did the regeneration, as reading above, logic says the diluted oil level will increase due to the regeneration process.
Maybe this information is of help to people> But any observations or suggestions welcomed! I think the next step is to lower the oil amount to max again and see if it rises again, now it is running "normally" again. I also read that using supermarket fuel could "irritate" this condition (which I use). Any views on that? Should I stick to a better known brand - any suggestions?
Thanks for your time! By the way, I have 75k on this car and owned for 4 years with very few issues!
Oh, and forgot to mention. Pre new Turbo, I was getting 55/65 mpg motorway consumption. Since new turbo, that came down to under 55 and now - since DPF problem - I am getting 45 mpg on same motorway journey! Painful!
FlashbladeMember Since 09 Feb 2013
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13 Feb 2013 - 19:34