Stop -don't take it to the dealer!! First spend the $50 for the tool and rings (available at the mb parts counter)Then spend about an hour installing new rings,and retorquing to specs.(don't overtighten)Shazzam purring like a kitten once again(may smoke a little at first)It might take a bit of cranking to start it up so dont push the starter to hard or to hot!I'm afraid the dealer mechanics will just remove and clean("remanufacture") then reinstall ip and check for leaks.Shazzam $2500