hi guys, recently i found brown sludge in the coolant tank, and was told by my mech that my head gasket is gone. He said that the cylinder block looks fine. I got the gasket replaced few days back and now the coolant is much clearer.
however, theres still a little bit of goo inside the tank, although none of it is floating on the coolant. The rate of sludge forming up is now much slower than before. Are these the leftover sludge from (radiator, water jackets etc)?? Or does this sound like something else??