Hmmmm. I think around 15k with Synthetic, so that would make it 95kmiles when I started using Mobil1. I can see oil coming from the right side valve cover, but no visible drips on the driveway
I had the same thing before I switched over. I imagine if I did the valve cover gasket I would have no leaks at all, but since it isn't bad, and I am lazy, I am not going to doit anytime soon.
I change the oil every 3k miles. I did 2k-2500 with the regular oil. It is a bit overboard, but I am anal. I also plan on driving this car to well over 200k so a few extra bucks here and there doesn't hurt. The synthetic comes out pretty clean at 3k, a nice golden brown, a little darker than new oil.