I went to the Infiniti Service dept. today to have some needed maintenance done on my 06' M35x with 106,000 on the clock. Transmission flushed, F/R differential and transfer case fluid changed, oil change and some other items. They do a complete review of the vehicle. I was told the valve cover gaskets are starting leak at the rear of the engine. Not bad, just weeping a little bit. I got a quote of $1600.00 to replace the covers. Obviously, this is all labor but sounds somewhat high. It a good service dept, and they've been fair with other services. Just checking in to see if others have had this service and if so, related costs.