Has anyone come across instructions for changing the diesel filter on a year 2011 1.6HDi 92 (DPF) engine ? The main thing confusing me is the filters I have seen photos of online for sale don't look like the one fitted to my car ! My diesel filter is the type which has a hand primer button on the top although I don't know whether that's the filter itself or just a housing which contains the filter inside. It has been changed before by Peugeot but I was thinking of doing it myself this year if I can find suitable instructions. If it's known to be difficult to change then please let me know and I'll have the Peugeot dealer do it for me. I do service my own vehicles but have never tried the diesel filter on this one as it doesn't appear obvious how to change it.