Just after a few tips/ ideas here guys.... 9 months ago I paid a good whack to have a suspect head gasket replcaed on my 2001 S3 (completely stock). After the job, car still had same problems using coolant, mayo on the oil cap etc... So suspected the head was cracked. Having nothing to lose at this point (looking at same money again + new head + car has 126k on the clock already), I chucked a pot of k-seal in. Since then all has been good. Took car into another garage for a service last week. They said the work on the head did not look like it had not been done.. whaaaaaat??!!! They said there was no sign of the head being disturbed. he showed me the head gasket tangs sticking out of the block and they looked pretty old to me... I have written a stiff letter to the original garage. The replied saying the only absolute proof that the gasket has been replaced is to remove the head again and inspect the resurfacing job that they said they did on the head. They would take the head off and an independant assessor could take a look. So, is he calling my bluff- I'd have to pay for the head removal again if I'm wrong. (I wouldn't let him touch the car again anyway..) But how should a 9 month old head gasket job look? Do they rust / oxidise quickly? Is there a 100% easy way to tell the work had actually been done without a strip down? eg is it easy to see the head bolts as well? Just about to instruct an approved vehicle assessor, but don't want to throw good cash after bad if they can't prove it... Nightmare all round!