[fatlab]

Thats why it is a closed system, the Antifreeze does not like oxygen and ends up looking like your pics. Just refill and ride, then reflush as someone else stated in above posts.

 

[fatlab]

Beyote, Patronize!! I dont think you know what I mean by a closed system. Closed sytem meaning NO OXYGEN/ AIR in your cooling system when full of coolant. Oxidation occurs when the coolant mixes with air, as I seen by your pics. So, no I am not patronizing you or your bike. Just a simple answer on why it occured.