activity in my eta expansion tank..is that normal? (archive)

I haven't seemed to notice before, but I am getting a churning of coolant in the expansion tank. I am not sure if it is boiling or
just swirling from the engine running, - but I have not noticed this before.

I have replaced a few hoses recently and when bleeding the system I don't feel that I ever noticed an bubbles coming out as the
Bently says to watch for - which didn't seem right.

The temp guage has been at less than half even at extended idle which is less than it used to run before I changed hoses. I don't
believe I am at a 50/50 mixture and probably have more water than coolant at this time. I was going to have it flushed at the
dealer before winter.

I was hoping that someone may remember what their coolant tank fluid looks like while running with a hot engine.

Thanks,

Don C
87 eta

Follow Ups:

[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]

Questions, comments, or problems, please visit the Roadfly help desk.