Rising oil levels. Only happens to D5's? Right?

[chrisdc]

Wrong!

Would be very interested to hear from other V50 / S40 owners with the 4 cylinder 2.0D engines that have this same problem.

Thanks in advance,
Chris

[DieselDoNicely]

No the oil level rise as diesel gets in the sump, something to do with the DPF cycle. Change the oil and have the car looked at.

[KBB]

I have just put this info on another similar post, so here is a quick explanation on the problem. Rising oil level on a common rail is down to a number of failed or aborted regens. The ECU during the regen process will command post combustion injection to raise DPF temp to start the burn-off process. After a number of failed or aborted attempts the diesel gets past the piston rings and makes it into the sump mixing with the engine oil, sludging and raising the level.

This is common in the VAG group and Vauxhall. TSBs require engine flush filter change and sump removal to prevent damage. The have been a number of cases where the rising oil level has made its way into the PCV system and into the intake system creating self fueling and the runaway engine syndrome, when this occurs the engine goes to full RPM and self destructs.

[chrisdc]

Originally Posted by KBB

I have just put this info on another similar post, so here is a quick explanation on the problem. Rising oil level on a common rail is down to a number of failed or aborted regens. The ECU during the regen process will command post combustion injection to raise DPF temp to start the burn-off process. After a number of failed or aborted attempts the diesel gets past the piston rings and makes it into the sump mixing with the engine oil, sludging and raising the level.

This is common in the VAG group and Vauxhall. TSBs require engine flush filter change and sump removal to prevent damage. The have been a number of cases where the rising oil level has made its way into the PCV system and into the intake system creating self fueling and the runaway engine syndrome, when this occurs the engine goes to full RPM and self destructs.

It's worth checking your diesel pump if you have a 2.0d. I had a brand new DPF fitted to my car because I was plagued with Soot Filter Full messages. I was also getting Engine System Service Required messages on a regular basis. Fitting the new DPF got rid of the SFF messages (I've had 2 in 5300km whereas I used to get one on every tank) but not ESSR. The oil level continued to rise. Turns out the diesel pump was leaking fuel into the block past it's drive seal. Very rare, but it happens. It took a year to find this!

[cookie]

Merc Sprinter vans have same problem, its almost a hazard of owning a diesel with a DPF