znegotiator

Hi There, Anybody changed a head gasket or cylinder head before? Looking for a garage that has done this before on a 2006 A6 3.2 engine with 180k km. History: At 110K, loosing coolant with no leaks. It was tested by Nabooda and they did a pressure test with no leaks found. Around 110-115, the car was stuttering during acceleration and also rough idling from time to time. Switching off/on used to solve it. Took it to Nabooda and nothing was found. Now at 180k, it happens almost all the time. . It used to happen from time to time but now almost all the time. Took the car to Nabooda and i have low compression in cylinder 4 and 5 along with some water found inside. Might require a head gasket, cylinder head or even a complete engine. The only way to find is to open the engine and they are pricy. Any suggestions? Thanks!