I felt bad changing it. Based on color alone I could have gone 12K or longer... maybe good filtration, maybe good oil, maybe engine is easy on oil (as I have read). Science is science and right now I'm on 8K OCI/FCI with UOA to determine a baseline wear & OCI/FCI with my engine.
Out: PP 5W-20/OEM Filter, 11,000 miles
In: PP 5W-20/Fram Filter
I remember a few years ago, before I found BITOG, wringing my hands because I was approaching 5000 miles on my oil. I drove the car like a granny until I could change the oil. I wouldn't say I was happy taking this car to 11K, but it was much less stressed about it.
2009 Hyundai Sonata GLS with 2.4L 4 cyl
Out: PEAK Conv 5w-20 and OEM filter after 5,200 miles and 6 months
In: Castrol GTX Synblend 5w-20 and OEM filter
Sent sample for analysis and will post results in the UOA section.