As well as the problem with a smokey exhaust detailed in another thread, my A4 1.9 tdi ('98) keeps leaking oil from the oil filter? It happened first a month ago, a couple of weeks after an oil service. Oil ended up squirting from the oil filter . Upon inspection the rubber seal on the filter had been forced out of its locating groove, I assumed the filter had been put on too tight by the fitter, so I fitted a new one again myself. Just under a month has passed and the same problem thing has happened again on the way to work. I havnt taken off the filter again to check the seal (I've just got back from the break down), but I guess the same problem is occuring. Any ideas?