Update...

I love Tesco points, so does the Mrs!!

Went with Tesco regular diesel (only one they do anyway, lol) and put a double dose of Millers EcoMax in it.

Can't honestly feel any difference.

I was also going to say that since using Wynn's turbo cleaner x2 and Wynn's injector cleaner x2 for the last 4 lots of 60 litres (dosage for the Wynn's), I've not had the Turbo performance A come up, but then again I don't drive it like I stole it anyway!! the error would only come on with prolonged boost or on a long pull, not happened either when I towed the caravan.

I've since put new brakes on the rear (complete) and I'm currently averaging in the cold around 22mpg.

I'll stick with Tesco for now and do a dose of the Millers every time.

Cheers Dean