>In the past 2 month I had send my D600 two times to Nikon for >service. >Yes, Nikon took it in and the first time they cleaned the >mirror box and the sensor glass perfectly. Just afer a couple >of 100 shutter actions the problem occured again. Nikon took >it in and serviced it and I asked to fix the problem and >remove the lubricant or seal the leaking spot. >I got it back perfectly clean but just 250 shutter actions >later the D600 spits again the hard to remove lubricant in the >upper left corner. >
Third time's a charm. You might want to try sending it in one more time. There is significant interweb chatter about D600's being sent in for cleaning and coming back with replaced shutters. I doubt Nikon is doing shutter replacements for D600 dust/lube issues unless they have good reason to believe it's a fix.
The issue on my D600 seems to be manageable for the time being. I've learned how to do wet cleaning as needed. There is some indication the issue is becoming less as I use the camera. If it bothers me enough as I near the end of the warranty period, I'll send it in and hope for a permanent fix. But, for now, it's manageable and tolerable.