I have a 2016 Skoda Octavia, 1.6 TDI, CXXB engine with a significant coolant leak, it will go from overfilled header tank to coolest low alarm in less than 10 Km's.

The leak seems to be coming from the front right corner of the engine (if you were standing in front of the car) somewhere near the underside of the intake manifold, the oil cooler has been replaced, with absolutely no affect to the leak.

An internal leak in the intake manifold seems unlikely due to firstly, the external nature of the leak and the fact there isn't a hint of white smoke or similar from any kind of moisture entering the combustion cycle.

Any ideas or common know faults on these engines that would cause such a leak?

As always any help much appreciated.