问：风扇切断发动机后持续1或2分钟，一点点水从溢流箱中出来，有时

I got new waterpump , new electric waterpump ,new thermostat ,new spider hose ,new reservoir , new intake manifold gasket ,new water tower to upper radiator hose, radiator is four years old, never leaked anti-freeze...........I can't find any leaks...........I drive the car about five miles and the light comes on saying I need water, it's low....now I tested the reservoir with the block test and the water stayed blue throughout the test, did not turn yellow or green, I don't no if the fan relay should be a concern I have not changed it.....hope you can tell me something good...THANK YOU FRANK P

My car has 170000 miles.
我的汽车有自动变速箱。