ok so i fill the coolant tank up and then in about 3 weeks only a tiny bit is left in there?..where is this stuff going? If i had a headgasket leak wouldn’ti be blowing white smoke? its kinda wierd…dont you think?
that’s the overflow container… it’s level changes all the time
when the rad gets too hot it will let some of the coolant fluid to go into the overflow and out of circulation to give it a chance to cool off so the whole system doesn’t got BOOM from too much pressure
and when it’s all boiling, it might come out the top spout. check if your inner rail is wet by the coolant tank.