[Laird Scooby]

I agree there has to be a point where you cut your losses and move on, if you do, i wouldn't buy another diesel. They have become over-complicated due to the "need" for reduced emissions. As i've tried pointing out to many, no matter what you do to diesel and whatever DPF, cat or anything else you hang on it to catch those harmful emissions, they still pollute badly.

This was demonstrated very well recently for me. I live in a rural area where most cars are petrol. Normally if i blow my nose, it's a fairly neutral sort of colour.
However a few days ago i ad to go out for something and the journey took me to busy towns on busy A-roads/motorways with a much higher concentration of diesel cars.
Blew my nose earlier and it came out black.

I firmly believe that's a direct result of those diesel fumes.