Oil Cooler Hose Leaks and Failure on Older Mercedes (especially OM 616 and OM 617 Diesels)
Along with radiator neck failure, the rupture of one of the large oil cooler lines on your diesel engine can easily ruin your engine. When one of these lines goes you can lose all your engine oil in just a few minutes. If you are driving and not watching your oil pressure gauge you can destroy the engine bearings in short order.