hi, thanks for replies, it was evaporating before rings job and it still is there. water does not finished but become low,
now i cleaned the radiator after 10 months and add coolant , radiator cap was problematic.so i changed this too.
now one question, i added coolant and water in radiator to full level , when i close cap run it some kms, water level was not full, today i goto islamabad and come back home and checked it water level was not full it was till where radiator radiator cap ends . Some coolant is in reserve bottle there. is this fine ? is new radiator cap pushed surplus coolant in reserve bottle, is this fine ??