I fear stating it too loud for fear of jinxing myself, but my Genesis 427, iron block, remains leak free. Had a minor leak from the rear engine seal during the first 500 miles or so, but seems that once the seals seated no more leak. Now has 2000 miles on it, all since it was registered in mid February, 2007. I regularly look underneath expecting to find a leak, but it is always dry. Perhaps it is just blind dumb luck. Hope it lasts.
