[Brian in Tucson]

Is your engine smoking, using oil, or leaking? If it's running okay, don't mess with success! You wouldn't even think there's a possibility of a problem if you hadn't run the oil analysis.

BTW, 5000 miles for a drain interval isn't outlandish if you're using synthetic oil. From the test results, your oil viscosity was very nearly new oil values.

Good luck, and don't worry too much about it. If it needs a replacement engine, it'll probably still need one if you wait 20K miles or even 50k. As for me, it's warm here today, I'm going out driving . . .