13-05-12, 01:01 PM
check the oil filler plug on the underside....if you have mayonaise there thats oil mixing with the coolant.....if theres air in the system it could be pushing the coolant out of the header tank , try running it without the coolant cap on , you should see air bubbles trying to escape if theres air in there,when the caps on and sealed theres nowhere for the air to go except the overflow......

One, is never going to be enough.....