yes thanks for that i have have the diesel do it before and was told when the dpf regenerates it can put any unused diesel into the sump. So i changed the oil and oil filter .. but i have to say it didn't take long to start topping up again .i have been looking at injectors but I'm not sure what numbers have to be the same. on mine they are , 5U3Q-9K546-AA. ADQTL FJ17 30811 picture attached of my one . Any help would be appreciated thanks again..