Leaking from bleeder screw in new overflow tank

[Airstream345]

So the brand new overflow tank seems to lose coolant from the bleeder screw in the top of the tank on a regular basis. So much so that I have to add coolant in weekly. New tank, new "T" bleeder, system filled and bled, etc.

It appears that return coolant is getting "stuck" in a small chamber at the top of the tank.

 

[johnsoax]

That section of the tank stays full of coolant all the time. I'm not sure why your bleed screw is leaking. Maybe you got a bad tank?

 

[Airstream345]

Good to know it's supposed to have two chambers. I'll need to see why the bleeder is leaking. Tank is new, bleeder has an o-ring, etc. but seems to be leaking from the seal.