White foam in coolant

[06Amarillo]

Opened my degas bottle today hole truck was running. Noticed that there was a white foam in the coolant. I have a coolant filtration system too :s.

 

[6.0 Tech]

Whats it smell like?

 

[06Amarillo]

Just a strong coolant smell

 

[06Amarillo]

I took a picture but can't figure out how to upload it

 

[Zmann]

you ever flush this ?
maybe residual flush chemicals ?

picture from a pc use the go advanced button

 

[06Amarillo]

Yes I flushed it 10-15,000 km ago