What I can't figure out is that when I sent used oil sample with 5000 miles on Mobil 1 5w-20 on the clock to Blackstone Labs on 6/7/11, I mentioned the vehicle sees lots of short trip when I sent my UOA in.
They said,
"Thanks for the note on the type of use your engine sees. As you know, that can be a factor in the type of wear your engine produces. Still, we're glad to see that the short trips and the 5,000 miles on the oil hasn't hurt a thing in your Honda's engine. Universal averages are based on about 6,000 miles, and your engine's wear looks just fine in comparison. The TBN read 3.2, showing active additive left, and no harmful contaminants like fuel, water, coolant, or excessive dirt was found. Run your next fill out to 7,000 miles and check back to monitor wear."
They said,
"Thanks for the note on the type of use your engine sees. As you know, that can be a factor in the type of wear your engine produces. Still, we're glad to see that the short trips and the 5,000 miles on the oil hasn't hurt a thing in your Honda's engine. Universal averages are based on about 6,000 miles, and your engine's wear looks just fine in comparison. The TBN read 3.2, showing active additive left, and no harmful contaminants like fuel, water, coolant, or excessive dirt was found. Run your next fill out to 7,000 miles and check back to monitor wear."