Hi all, Picked up my '99 CLK Cabrio on Friday, driving it home it was as smooth as a smooth thing through the gears. However, I was advised by a few among our number that I should change the gearbox oil, despite the car having a paltry 45,000 miles in it. I mentioned this to the awfully nice man from whom I bought the car and he said it would be done before I picked it up. While I have no reason to disbelieve him, I am a creature of evidence, rather than trust, so I'd like to check for myself. Sadly, I am about as competent with a spanner as David Blunkett is with a magic eye picture. With this in mind, can anyone explain please, with pictures if appropriate/necessary, how I go about locating and extracting a sample of the gearbox oil, and how I tell how old it is. Thanks all, Matt.