My Passat diesel's fan stays on after I switch off the engine - is this related to the DPF?

I have a Passat Estate diesel and have read your comments regarding the problems of the DPF. On a couple of occasions recently the engine fan has continued to run after a short journey. Since then I have...

How can I fix DPF issues?

My wife has a 2014 Mazda CX-5 with 80k on clock. We have Been advised by a garage that the DPF is more or less knackered and causing turbo failure. One garage advises a DPF delete but another said not...

How do I get my DPF to regenerate?

I own a 2017 BMW 640d Coupe. It easily reaches 70 mph at 1500rpm in auto mode. I think you advise drivers to maintain 2000rpm for 15 miles or so on a dual carriageway or motorway. Should I do this in manual...