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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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2007 D5 (185)....Excessive Oil Consumption & Soot Filter FulViews : 35057 Replies : 115Users Viewing This Thread : |
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Apr 27th, 2017, 12:41 | #21 |
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I don't have a soot filter full message, just really high oil consumption. My car had a new DPF before I purchased it so possible I just haven't filled it with soot yet.
In 5 months I have covered about 5000 miles and used near 10 litres of oil. Initially I had no signs of smoke. Now I am getting smoke when accelerating after slowing down. |
Apr 28th, 2017, 00:31 | #22 | |
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Quote:
also cannot see that there is any connection from DPF/CAT to oil system for this magical dilution of oil that I have seen, perhaps this is only in the newer version.... going to try a compression test, wet and dry.... |
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Apr 28th, 2017, 11:40 | #23 | |
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What is a mileage of your car mate?
And what grade of engine oil do you use? Quote:
Compression test is recommended and is a low cost procedure. Low compression can be a consequences of the DPF issues For the higher mileage cars it would be better to use 5w30 engine oil instead of 0w50 which is thin. 5w30 will not do any harm to the engine. It even can be better. I have noticed a huge better difference to the engine performance, engine noise when switched from 0w30 to 5w30 for cars which made 80-100k miles and above. There is no very low subzero temperatures in the UK so 0w30 is not essential.
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S40 T4 1998 XC90 D5 R-Design 2008; 215 bhp; 475Nm - SOLD Last edited by diro; Apr 28th, 2017 at 12:09. |
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Apr 28th, 2017, 12:11 | #24 |
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Not sure who that's directed at, but I use the recommended 0w30 in ours. So would a DPF delete potentially sort the issue?
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Current: 2009 V70 2.0D; 2005 V70 D5 (E3) Previous: 2007 XC90 D5; 2000 Ph1 V70 (Arfur); S40, V70, S60 Other: Saab 9-3 TiD 'vert |
Apr 28th, 2017, 12:28 | #25 |
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I very much doubt it. The DPF is getting blocked because you are burning oil not the other way around. Also with the amount you are topping up the oil in the crankcase won't be thinned down from diesel dilution during re-generations.
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Apr 28th, 2017, 12:30 | #26 |
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Well, that's what I figured, but your man there seems to say otherwise (not a dig; all advice welcomed!). I'm just exploring all options before I leave it at the side of the road and go back to Mercs...
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Current: 2009 V70 2.0D; 2005 V70 D5 (E3) Previous: 2007 XC90 D5; 2000 Ph1 V70 (Arfur); S40, V70, S60 Other: Saab 9-3 TiD 'vert |
Apr 28th, 2017, 14:45 | #27 |
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Every case can be different...
We are discussing options what it can be. In most cases dpf is a reason. Personally I would monitor live data but not everyone is capable to that Critical data in such scenarios is dpf differential pressure readings, exhaust temperatures, oil pressure, status of dpf filter. Very important figure is exhaust temperature which is about 150 - 200C. Sometimes a little higher. It depends on the driving style. having even a little dpf clogging exhaust temperatures will be higher and it may cause high oil consumption. Condition of the engine and its components matters. Thinner oil can be a factor too. If you are a Greenpeace member - ignore my advice to delete dpf As I mentioned before previous DPF issues could be a reason car has oil consumption problems now. With DPF fitted is more guessing than seeing an obvious fault. A massive oil consumption also very likely is a consequences of the previous DPF issues when the harm to the engine been done In my opinion to start solving such problems you need to delete DPF (it also has to be gutted). Than it will be more clear what comes out from the exhaust how car's performance changes etc.
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S40 T4 1998 XC90 D5 R-Design 2008; 215 bhp; 475Nm - SOLD |
Apr 28th, 2017, 22:09 | #28 | |
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Quote:
The DPF is not causing the oil burning, period. the oil burning is clogging the DPF. I agree a compression test but I have the option of swopping the PCV valve so I am going to look at that tomorrow. really like to know if the rings can be changed without removing engine, I figuew if the sump can come off can you access the ends of the con rods from underneath.... |
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Apr 28th, 2017, 23:40 | #29 |
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I will not argue anymore about the DPF. Only will mention I deal with DPF and car remaps almost every weekend thats including car diagnostics etc.
You didnt tell what is a mileage of the car? Maybe injector problem? Its enough 1 injector to overfuel and you have a problem - oil gets diluted with diesel and burns quicker... Anyway I leave it with you. Wish you good luck finding a fault and sorting it out. I know its a big pain You should have access to the piston rings when sump is dropped.
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S40 T4 1998 XC90 D5 R-Design 2008; 215 bhp; 475Nm - SOLD |
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Apr 29th, 2017, 08:54 | #30 |
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I'd be really interested to hear how you get on with changing the PCV and if it makes any improvement.
I'm absolutely certain the DPF isn't the root cause. Its very unlikely that oil dilution is a problem given how much fresh oil you are having to add. Deleting the DPF isn't a good solution for anyone, for one thing its illegal and likely to void your MOT. Also in my view aftermarket remains are not a good idea but that's a bit off topic! I'm now using about 2 litres in 600 miles so this problem is going to have to get sorted one way or another! |
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