Just an FYI to any of you that had the same question. I was able to get an answer to my question by talking to an infiniti service technician that indicated to me he had serviced many QX56s that were unaffected by the recall that had not had to have a timing chain replacement. Additionally, I filtered QX56's with high mileage on auto trader and looked at their Carfax reports and was able to see many that had made it above 200,000 miles that had not had to have a timing chain replacement. So, I feel much better about owning one that was unaffected by the recall. My wife has since decided she wants a smaller SUV and we're going that route. But I have concluded that these are solid vehicles based on this information and the one that I have with everything completely functional at 100,000 mi.
