greese in a greseless waterpump ??

[sphooch]

Hi Guys, i developed a birdie under the hood, and i figured something needed greese. I installed aleakless water pump a few hundred miles ago , but i never greesed it. it was from a rebuild guy at a swap meet .i don't remember him telling me it had to be greesed. i asumed wrong, i put greese in the rear and i think i hit the front too. it got a little quite at first and then after a few drives i noticed it quiet. so how often should i greese it and should i doo both?