Has anyone made a successful Mercedes goodwill claim on hydraulic lifters? My car has been diagnosed by Mercedes needing the lifters replaced. Car is 58 plate on 72k. I've rang local specialist and two have suggested Mercedes should help with the issue. The original Mercedes dealer said they'd help on cars up to six years old maybe but two other localish dealers have both said they'd apply to Mercedes for goodwill contribution. Also the heads were off last year for the headbolt failure. I asked the dealer to look at the lifters/cams and I was told everything was fine (irrelevant i guess!)