@nta16 it doesn’t quite work with iPhone, I had to put in name with @ on reply and then go onto their profile, figured worth a shot. Did ring rac who said it’s probably dpd filter clogged and needs good run at high revs around 40mph but most roads here are 20/30 and only longish 50/60 road has loads of lights. Did go down motorway as slow as possible in high gear but only for about 20 mins as not sure I that’s the issue so didn’t want to make it worse as don’t know if car has seperate dpd filter light or not. In fairness didn’t get up to that high a rev on motorway, may get some redox or similar stuff and give it another go this evening when motorway is empty