Does anyone know of any issues regarding white exhaust smoke from a 2003 E39 525? Our car has covered 70k and has recently started emitting a cloud of white smoke when stating a warm engine. This is not a continuous emission, but a cloud that lasts a few seconds. Also the car has started using oil in asmuch as I need to add 1 litre every 3 weeks or so.
To me it seems like there is a problem with the valve oil seals. Any help would be appreciated. Many thanks.