My 2000 Cadillac DTS started burning oil at 55,000 miles. The dealer said the rings were shot and to replace them and new pistons would cost me $6500.00. Is this a fair price? I had the work done at 58,000 miles and paid the bill. When I had the car in for its 60,000 mile sevice they charged for a full service as if the engine had 60,000 miles on it. (Another $450.00). And just yesterday, at the 63,000 mile service, I was told I needed a new serpentine belt. Shouldn't this have been replaced as part of the engine work? I guess I'm looking for a third party opinion that has expertise in these matters. Can you answer these three questions for me?
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