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Dpf And Rising Oil Levels


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#1 Flashblade

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Posted 10 February 2013 - 09:52 AM

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!

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#2 Flashblade

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Posted 13 February 2013 - 06:04 PM

No replies - heh ho! In case anyone finds this thread and wonders what happened...

I had the filter removed from the casing (by Hi Tech Engineering in Northampton - would recommend) so it's basically just a pipe now and the engine re-mapped. Totally different car; more responsive throttle, better acceleration and got 70mpg on way home as compared to 45 on the way there. Definitely consider having this done if you are having DPF problems!

#3 STEADS

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Posted 13 February 2013 - 06:56 PM

By the sounds of it you are getting diesel in the oil no point in draining back to level as oil will now be diluted and its vicosity impaired which in turn could end up knackering your engine so you want to get to the root cause if dpf is blocked again its possible you have no elois in the tank by under the fuel tank its this that helps to burn off the carbon build up .dpfs nothing more than a pain in the proverbial orifice .you dont say what ltr your car is 2.0 or 1.6 as i,m sure (stand to be corrected )the 1.8 doesent have one i know mine hasnt.the garage who dumped the 2ltrs of oil in my opinion arnt clued up as they should have known it would be diesel in the oil if the dpf was blocked or are they waiting for a bigger job out of you ie your turbo or engine going not wanting to scare you but it stands to reason if your oils diluted it wont do its job .

#4 Flashblade

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Posted 13 February 2013 - 07:33 PM

To be fair STEADS, the garage I have used for over 10 years is totally reliable and sometimes I even have trouble getting them to charge for small jobs! Have read a lot about this DPF issue and I just don't think it is that common occurrence (with diesel getting in the sump). My contact at my garage even spoke to the Diesel specialist at Ford and he said he'd never heard of it and that it was probably the DPF fluid that was getting in the oil !!! You are right in that my car is a 1.6. With this engine it uses the normal injectors to send diesel to the DPF (where as on other engines there is a separate pump), hence it was ending up in the oil. Anyway, as stated above, filter removed and it's as happy as Larry now, so, for now, touch wood, I have a good car!

#5 STEADS

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Posted 13 February 2013 - 07:42 PM

have you had any issues since you had dpf removed and i presume deleted from the ecu with remap reason i,m asking is i,ve got a 2.0 as well as the 1.8 but this has been off the road for a while blew turbo after replacing engine on first run out had the dpf removed on that and deleted in the ecu but as car is off the road havnt been able to see results of removal/delete of dpf got a new turbo in situ just need to connect all the pipe work up and a few other jobs on it before running again (weather beat me so summer project) i,m sure others on here would be interested in the long term affect of the dpf removal save a lot of people some heartache in the future

#6 Flashblade

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Posted 13 February 2013 - 07:51 PM

Well I only had the filter element of the DPF removed earlier today (and ECU re-mapped) so it's early days. However, the car on the way home was fine and much happier with better acceleration and throttle response + vastly improved mpg's. If it all goes wrong, I'll let you know!

#7 lottysvdub

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Posted 13 February 2013 - 09:24 PM

Can I ask was it expensive to get done and also where did you get it done lol

#8 FOCA

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Posted 14 February 2013 - 04:05 AM

No replies - heh ho! In case anyone finds this thread and wonders what happened...

I had the filter removed from the casing (by Hi Tech Engineering in Northampton - would recommend) so it's basically just a pipe now and the engine re-mapped. Totally different car; more responsive throttle, better acceleration and got 70mpg on way home as compared to 45 on the way there. Definitely consider having this done if you are having DPF problems!


Yes the best thing is to remove the DPF and get it deleted in software along with a remap

If oil contamination is suspected, and the level is high, better to flush the old oil out an fill with new oil, if oil is getting high due to contamination, better to put it half-way rather on its highest point (to allow some "room")

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