Focus 2004 TDCi.
Every few weeks the water level in the expansion tank drops to way under the minimum level and needs topping up, this has gone on over the last 2 or 3 months.
I have replaced the expansion tank filler cap but no difference. There in no sign of a water leak in the engine bay or under the car when left parked. There is no trace of water coming from the exhaust pipe. There is no sign of water in the engine oil.
Other than the water loss the car runs well. Does it sound like a hose may have a slow leak? The hose clips are non adjustable.
Thanks