Latest sample out of my 2011 Mustang GT. Sample taken at 149k miles. This engine seems to be wearing beautifully as wear metals are at or below average for these engines. Several previous UOA's are also visible on this document. Trend seems to be great, minimal shear and TBN is excellent for the mileage. 20k miles should be achievable. My driving habits have recently changed. Instead of the the 3200 miles/month I had been averaging, I'm now only putting ~1000 miles/month on the car so this will become an annual oil change.