Picked up Ml today. Total cost was $514. for complete valve job, valve seals, rod bearings and brake fluid flush. New block, pistons and rings at n/c from MB. Quite happy at final outcome. Will be changing oil at 5,000 with 0-40 Mobil 1. Good luck to others as these problems come up. I also have a 1998 E320 4matic wagon that has 87,000 and doesn't use a drop!