I agree with Patman, this oil is in good shape. Look at the insolubles - 0.3 after 10,000 miles! Look at some of the other UOAs on here. BTW, you'll be hardpressed to find a slew of 10k mile & greater UOAs. If you really want to know what is going on & get in-depth professional advice - use Terry Dyson. With a car like the NSX, I sure would.