hi ive got a 51 plate mondeo 2.0 petrol the problem starts when i took it for its mot it failed on emmisions they think its burning oil its got a light blue smoke from the back on high revs. a friend is changing the lambda sensers now and adding a oil treatment to thicken the oil the engine management light has been on for about 4 weeks now and the mpg is low you can smell petrol from the back end but ive not lost power. just want to know what you all think cheers