took in my 355 gts for an annual service and other things and a week later they told me that they founf that the rear axel some teared or what not, that holds the grease or oil or something..

Sorry for being unclear but what he was talking about sounded very unfamiliar to me, so i thought ide ask you guys. I said how would that happen and the service guy told me its pretty common and happens over time.. anyone heard of this?