Perhaps go back and add what brand/type of oil you are using.
If you're using, let's say, Penzoil Ultra Platinum Synth, or another top synthetic, I would be less concerned ...if you have a bunch of things going on. I used to always run my diesel Jetta 10k (or more) miles between changes with Shell Rotella T6. Sometimes as much as 12k or 14k between changes. Of course I would top it off as needed, sometimes adding 3-4qts of new oil between changes. That makes a difference. After 275k miles the cam lobes still look good.
I have a buddy who used to get new company cars about every 2-3 years. On one car, (1977 Impala/350 gas), he did an experiment: After two break-in oil changes, he put in Mobil 1 and never changed the oil once ..and returned it back to the company with the Mobil-1 still in it ...at about 75-80k miles. For guys who weren't around back then, Mobil 1 used to run ads in the late 70's, early 80's claiming how great and long-lasting their *new* synthetic oil was. And you could go a long time w/o changing oil. That's what prompted the experiment. He kept the Mobil-1 topped off and it didn't take much in between he says. And I remember that it never looked real dark either, even towards the end. I don't remember if he changed the filter ..pretty sure he didn't. A fellow sales guy bought the car from the company for his wife/kids (with the high-mile oil still in it), and they drove it for many years as a family car. My buddy did tell the guy he was running Mobil 1 in it, (but never mentioned anything about the no-oil change interval). He asked about it a few times over the years and his colleague never mentionted anything about problems, and had great luck with the car. True story.
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