There have been posts before addressing this concern and that FSS calculations can result in expensive damage to the engine. In fact, I believe it was posted some time ago that M-B replaced some engines that were damaged due to poor FSS management.
I believe the consensus is to trust FSS only up to 10,000 miles or so before the oil should be changed. You may want to search the archives back 8 months.
It's a noble for M-B to make an effort to conserve our natural resources, but not at the risk of damaging one's expensive and hard-to-rebuild engine. Where would the conservation be then?
Is your car still dealer maintained under purchase agreement?
95 E320 Cabriolet, 131K