True enough, but in both cases I ended up with a beautiful Mercedes whose engines had all new cylinder liners, rings, bearings, timing chain, tensioner, guides, & seals. They did run with great efficiency and lasted for a LONG time. The new parts and machine shop time cost some $$ but fell far short of what I would have had to pay for a Benz already in the final condition of my cars. "Starting right up", with none of the problems I sometimes hear of on this site, was just the 1st encouragement of what subsequent years of trouble free use confirmed. Don