Is this something to worry about, it's a wrx 2004 100K but with **** loads of history!

Over flow bottle doesn't over fill and it returning the water basically it's doing its job still. Car doesn't over heat and drives mint.

I've done a little video what people think. There was a small water leak from bottom pipe which is now sorted I believe. Doesn't do this all the time only when long drivers or hard driving. Also temp gauge stays at half way sits nice.

 

hi i would just keep an eye on it , if it was all the time it indicats hg going , it's not unusual to have a bit of bubbles and it may just be getting rid of air , the 2 litre is a tougher engine than the 2.5 , so less prone to hg issues , is the pressreurd expansion tank or cap ok as mine was failing and causing slight issues , when non pressured coolant tank is fillling up too high plus not returning then you have issues

 

Cheers I took it to rcm yesterday Ollie checked it over, from what I was told it's normal. There was a 04 plate sti there which did the same thing!

Plus we took the out and really drove it hard to try and get it to over heat, and nothing happend set half way. It's not over filling and doesn't bubble like a hot kettle from what I've seen on line. It will move a little then when cold go back down. Plus the bubbles only appear if I really push the car.

It's not using water and drives ok. So hopefully just me being a idiot lol

 

not an idiot i understand your concerns i've had hg failire twice before and it's not nice thinking crap i'm now poor again lol

 

This^^^