Hi I've got an old mk1 tdi galaxy and it's mot time again. I've been losing brake fluid for a week so took it to a friends garage to have a look, it seems that the master cylinder is faulty and allowing fluid to leak into servo. I've looked at a couple in breakers yards and none are the same as mine. Are there service kits available or do I have to buy a new one? Other than a couple of flexi hoses and the above she is good for another year Can I run this car on veg oil? One more issue is that the aux belt tensioner flaps about a bit on tickover and rattles, I changed the roller but still the same, the mechanic reckons I need a new alternator bracket as its worn where the tensioner spindle pivots, but the wear is minimal on the casting. Any ideas?