Hi,
I have a 200tdi 90 with 148,000 miles.
I took out the K&N air filter today to clean it and found oil in the filter casing... With the engine ticking over the oil (vapour / mist) is visibly coming from the breather pipe that fastens to the air filter casing.
Is this somthing to worry about (and fix) or is it to be expected on an engine with this mileage? What will happen if I leave it - Im thinking nothing other than topping up with oil because most of the vapour will be sucked into the turbo and burned??
I am assuming the only fix is to replace pistons and rings (and possibly re-bore)?
I am fairly confident about stripping and re-building the engine but what sort of cost would i be looking at if i have to replace pistons and rings?
Thoughts and advice appreciated. Jon