[Freelander Landrover Engine 2002]

I have a Landrover Freelander 2002 just changed the overhead gasket and is losing water and overheating

Gave it a pressure test and no leak

Changed the radiator gap and the tank is clear water.

But it loses water after about 20 kilometers about 2 litres.

Again no leak no water in the oil it is evaporating 

What can be the solution

Changed all the pipes already