Lately my car has been using a fair bit of coolant. so far I have replaced the overflow bottle, overflow bottle cap, all the hoses (genuine ford) and all hose clamps. The heater wasnt working so I did the heater mixer shaft also. The whole system has been pressure tested twice. once which found a small leak on the upper radiator hose because the clamp wasnt tight enough and the other we took the spark plugs out to check for head gasket leaks. but it is still leaking we found no traces of water in the cylinders (also used a micro camera). the oil has been dropped and no traces of water there either. The car has been on the hoist 3 times to check from under the car, nothing found here also. does anybody have any ideas where it could possibly be going? My next guess would be maybe the turbo somewhere.