Iv just bought a 2003 gt tdi and since iv had it its over heated three times in two weeks. Im not sure if i have a leak somewhere but when i top the coolent up with water i can see it running out of the bottom of the car near two pipes a blue and black, im not sure what them pipes are for or if its just a crack in the coolent bottle. When we water runs out its a rusty brown colour any ideas whats wrong would k-seal or rad weld sort it out if its just a leak?
Thanks