Hi Chaps , the oil light in my 300tdi 110 flickered briefly on a couple of occasions during a long journey and since then has started to do it more often and for longer . There's plenty of oil in it ( if anything it's slightly over full ) and the oil and filter were changed about 1000 miles ago . Oil light goes out right away on start up from hot or cold and if I pull over it disappears on tickover , but comes back as I drive away . There's 230,000 miles on a well looked after engine , no smoke or rattles or loss of power . Not using it til this is sorted .