chrisg - I should have referred to independent garages rather than Vauxhall dealers. To date, my dealings with the Vauxhall organisation since I bought the vehicle have been very good indeed, from the dealer who sold me the car, through Vauxhall customer services and to the dealer who now attends to it. The handbook is quite clear on the subject of the DPF.
However, prior to buying the vehicle I viewed several in different dealers under the Network Q banner. In each case the salesman had no idea of what he was trying to sell to me in terms of engine size, equipment, known faults, etc. I ended up at a VX dealer in Bedfordshire who knew his product, had carried out known recalls and basic maintenance and showed me what to do and what not to do before we drove away. Before the Antara I drove 2 litre Peugeot diesels for years and knew of the pitfalls of short hops and DPFs; it is just that the Antara is more of a rigmarole to keep sweet. It is a simple lesson but many seem to be completely unaware of the process. I also believe that good quality fuel (e.g. Shell) helps and have not used supermarket stuff for perhaps twenty years after seeing photos of a 'supermarket' cylinder head and a 'Shell' cylinder head. This was borne out when a Peugeot mechanic told me that the fuel filter was remarkably clean. Also, towing a caravan might help because it enables the engine to work harder and burn out the junk and any water.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.