and in reply to buying a nineties model SDL...DONT DO IT! Even though Im new to the Mercedes owners group I know about those engines! I had a very long talk with a mercedes mechanic and he discussed rods breaking or poking through and "ovaling" of the cylinders...this can all be fixed but not without extensive engine work by yourself or someone else...either one will cost a good deal of money. Like stated earier, 30% chance may be below majority but if someone handed you a box of candy and told you that 30% of them were filled with arsenic, would you eat one?