I bought this one http://www.opieoils.co.uk/showprodu...-formula-xle-5w-30-fully-synthetic-engine-oil Its supposed to be Acea C3 for the Dci, safe for the dpf filter.
Look for nissan dpf 5w 30 oil on ebay. £20.50 for 5 litres delivered. Its the genuine stuff used by the dealers for our engine. You will need 7 litres
This is the genuine stuff, it used to be Solaris but they seem to of changed the name to Evolution full-tech FE..