Hi,

my Mondeo 2.0 is leaking coolant at ~1 pint per week.

I replaced the (rusted) pipe that runs under the sump but this made no difference.

I then removed the exhaust heat shield and had a look at the block. From ther presence of a green residue, it appeared that the fluid was leaking from the (Ouch) head gasket. As it must be a small leak, I tried using block sealant in the water, but having now flushed the system, re-filled it and driven it for a few days, the level seems to have dropped again, although I can't actually see any water anywhere.

Does anyone have any ideas about what to do next?

Changing the head gasket is a last resort, as it will be a waste of money if the problem is caused by something else.

Thanks,

Mark.