Right guys, as you know I have had some trouble with my car from the injector coming unseated properly to the head gasket just failing. I actually went looking for something new for 8-10k and in the end decided to restore my car as what is out there on the new/2 year old market was apauling and I thought that there was no point in taking a step back It is in the garage and should have it back weds/thurs as they start on it monday. Just a quick heads up as I had this problem for ages and loads of different suggestions came up and the head gasket was a very long shot of what it could be. Basically I had a really slow coolant leak and had been working through replacing pipes, new header tank, new cap. And next up was bungs and the water exhange valve at the back of the engine to try and see if it solved it. However the problem was there for a year and about 20k miles before it went and became obvious it was head gasket, it must of been a pinhole leak or something before as there were no tell tale signs at all. I am posting this incase anyone else gets a similar issue and if this can help you avoid the gasket going by getting it skimmed in advance then it has sorta been worth it as mine needed doing anyway it now seems. Whilst in they are gona reseat the valves, getting the brake fluid flushed and poss a gear box oil change although chris my mechanic said he will test the brakes to see if they need flushing, and the oil may be a life long on the gearbox. The bill for the headgasket is gona be around 500ish including a service, as long as the head is not cracked. Currently I am using a 1.9 straight diesel megane M reg on loan from my parents! But hopefully the A4 will be back on the road within a week and I will keep you guys updated, but it will be running the best it has ever done in my ownership the last owner it appears left some bits of maintenance low at some point or did half ***** jobs leaving me to discover them. Also many thanks to everyone on here who has helped and advised me up till now.