Yeah the Peugeot DV6 engine is fitted to several cars inc BMW Mini, Ford Focus etc, and the issues are well-known. Perhaps models with the DPF are more prone to problems, also leaking injectors have been suggested as a cause. When shopping for mine (08 year) I made sure I got a Euro III vehicle with no DPF. Just for peace of mind I dropped the sump, cleaned out the oil pickup, replaced the turbo feed pipe and the banjo bolt with the filter that gets blocked (the replacement has more surface area - I asked a Ford masterTech if they replace or just remove the filter, he said if it looks ok they just clean it, if its looking mucky they replace, but they don't just rip the filter out). Job was quite a faff and I guess its no guarantee mine won't go bad too, but at least I've done all I can. I change the oil about every 5000 miles or twice a year if I can remember. Is it all worth it given the coming War On The Diesel and the other expensive things (dual mass flywheel, etc) on a modern diesel that are just waiting to fail...?