My Leyland daf lorry (2000 reg) runs and drives well. the temperature gauge is fairly steady indicating around 90 degrees. The in cab heater works well. However after driving the lorry I have noticed that the radiator is cold to the touch. I have found a slight water leak which I have repaired. The pipes leading to/from the radiator fell cold too. Any ideas if there actually is a fault or am I just imagining theres a problem

mike leach, July 2018