Yes.. good points all , especially Tard, and Hiro.. thanks both, but I'll stick to my plan and compare filters on it's next 6 month change. And if things look suss then, I'll be happy to post photo's and Name and Shame the Dealership.. . Btw.. I served my apprenticeship with Renault, then worked in a Ford dealership for four years, both in Uk, so I've got a bit of an idea how things work, at dealership level...