New member in Bmore. Looking forward to meeting other BMW owners :-)

[1996 328ti]

I wonder if it's just a case where the cooling system needs to be properly bled.
BTW- It's brake fluid.

[MsM$]

Is bleeding the system different from "pressure testing"? "brake."..I knew that.. :-) Thanks for your input... I really appreciate it.

[1996 328ti]

Is bleeding the system different from "pressure testing"? "brake."..I knew that.. :-) Thanks for your input... I really appreciate it.

I think so.
I'm guessing pressure testing will find leaks. If you have an air pocket, I don't know if a pressure test will tell you.