I had Blackstone perform a UOA on a BMW 740il with 35K miles on the engine and 10k miles on the oil. The oil had been last changed 11 months ago at the BMW dealer, and I assume that it had BMW Long Life oil in it. I don't want to type in all the numbers but Blackstone writes "universal averages show typical wear from this type of engine after about 4,400 miles on the oil. Most of your wear looks okay, though lead, from bearings, read a bit on the high side [30 ppm]. When we have established wear trend from two or three samples, we'll know better whether this indicates a problem. It could be coming from an additive, or a temporary particle streak, and if so, may decline in the next sample. The TBN was low at 0.7 and the viscosity was high [sus viscosity @ 210 F = 79.8], so the oil was pretty well used up." Any comments?