u/The-Baron-Von-Marlon

Every few months I'll get an engine light on and the app will tell me it is a DPF problem. No rhyme or reason. Once, confusingly, it was after a traffic free 150 mile journey at a steady 70. I usually just pour in some additives and it goes away.

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This weekend I finally cracked it. Sainsbury's diesel is causing it. Could be useful for anyone else with this issue. Im not too fussed around the technical reasons (seems like maybe lack of additives) but if it helps one other person then great.