Those little holes next to the bolts are for seepage and a lot of water coming from there isn't normal.
I'm guessing the seal at the top of the mid section tube is going bad or is bad.
How ever the pump pushes way more water than your motor will use so it should be OK.
Return ports:
You motor came with a pressure relief system., that the 2 holes in the mid section.
95% clog up and get stuck closed.
That's not a problem unless you start overheating.
The hose doesn't supply enough water to operate the cooling system right.
The life of an impeller: I just changed one after 7 years.
The owner thought the 7 year warranty meant he didn't have to do anything for 7 years

Depending on if they run it dry(ever) or barely use the motor.
One time running without water can destroy it.
It should be changed at the least 2 years.