Dont know if this is common or not. Today was riding with a buddy, he has the same exact bike (03 zx6r) and i happen to notice his coolant tank, then i looked at mine. His was fine, but mine looked like there was this white color crust in there against the wall of the coolant tank. At first i just thought my tank was frosted that color until i taped it and the crust started to break up a little. What can that be in there? and how did that happen? The bike is no more then 3 weeks old? And should i bring it back to get looked at or its not a big deal?