Leaks brake fluid from the splice between the upper plastic bit and the slave sylinder/Cluch sylinder inside the gearbox... if you find this in ur car the gearbox has to come out and the slave has to be changed, tis is all coverd by warranty, if you cach this early on then the cluch and flywheel don't have to be changed, but drive to long with it and the cluch plate will disintegrate (this is usually how the costumer notices the fault)
open bonnet
shine a light between the airfilter box and the engine like so:

if you see this u need to go to ford and book it in:

this is where it comes from:









