I've sold my BMW 5 series and have 13 litres of the special Mobil 1 oil that is approved by BMW and other marques for use on their turbo diesel cars fitted with a DPF (Diesel Particulate Filter). The oil has been approved by the following manufacturers:

BMW Longlife 04
MB-Approval 229.31/229.51
Volkswagen (Gasoline / Diesel) 504 00 / 507 00
Porsche C30
Chrysler MS-11106
Peugeot/Citroën Automobiles B71 2290 & B71 2297

This oil typically sells for £9-10/litre - grab yourself an absolute with 13 litres for £65. Collection from SE Hants please.