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    Reduced engine performance

    Hi Ya Ive got a TD4 diesel and in the main always use BP the 'standard' diesel not ultimate...
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    Reduced engine performance

    Hi all New to the forum, but I had the issue of the warning Reduced engine power. Seen all the potential answers but mine was easier. It all came about by using diesel from Sainsburys. At half a tank - I refilled with BP gave it a run and the fault has cleared. Been like that for three days now...