Well, I changed my oil again, but I got messy this time. I thought this would be a good way to keep up with how often I change my oil and what mileage I'm at when I do.
I changed it yesterday and I'm just at 269,900 miles. Everything seems to be doing good, still leaking oil. It was about a quart or two low when I changed it, and I have put about two quarts in since I last changed it. I don't know what that comes to in quarts per miles, but it went down significantly when I replaced the oil filler cap. That thing was leaking horribly. The new one is working great now.
It still leaks a bit of oil from the turbo drain tube, but I haven't the time nor the guts to rip the turbo off right now to fix it.