LCI X5 3.0D Fuel Economy

[DanX5d]

[QUOTE=jdd;851106]T
I’m not sure of the merit of pushing it as hard as you did to clean the DPF.
As far as I’m aware the DPF goes through a regen process when needed and I don’t think you can actually force this by your driving style.

I had the EGR valve update done early on as a blocked EGR valve can fool the unwary into replacing the turbo as they see oil in the intercooler and suspect the compressor seals. Mine has 195K on the original turbo and still going well.

I recall reading in the BMW tech literature that the DPF burn only occures after x time at operating temp, throttle position, load etc.

The DPF is known to block up on cars with repeated short trips on engines not getting up to operating temp for enough time to trigger the DPF burn off. It is not uncommon to hear of DPF fitted diesel cars being taken out on the motorways to give it a good clean out. My car has too many short trips so I thought a good run wouldn't hurt.
Cheers, Dan.

[x3oiler]

There is some detail here (nice site to bookmark btw) on how the Electronics decide to regenerate.

Regeneration, particulate filter - WDS

[jdd]

Very interesting article indeed, thanks for that.
What I also noticed while having a look on that site is the information about the trip computer fuel consumption calibration.
I suspected this was possible but hadn't found any evidence until now.. nice find !