anybody help please i have a mercedes ml 270 driving along the road 25mph all of a sudden there was a noise from the engine it sounded like a big bang i stopped got out noticed all the oil pouring out all over the road tried to start it again nothing would not even turn over just dead do i need a new engine it has only done 77000 has a full service history just serviced last month not at mercedes but a local garage i have been told that it has to have ring free oil is this true or not it is a 2001 . if new engine needed anybody know where i can get a second hand one