Took our 1998 ML320 in for new rings and what ever else they find today. Oil usage went to a qt in 300 miles very quickly. SA said that is what they have seen-all of a sudden quick useage. Truck has 91,000 and we are 2nd owners. Will be done free although the FSS suit is not settled yet. I asume they will want to replace the water pump and some other things that make sense. Will let you all know if anything other than the rings are bad.