Originally Posted by GrandZ45

At 8030 miles I performed an oil analysis on my 2013 purchased new. This was the second oil change using Nissan ester and this oil had 5350 miles on it. No mods. Aluminum and Boron were much lower than yours at 8 and 13 respectively. Copper, molybdenum and silicon were higher at 114, 470 and 84. Everything else about the same. I am not qualified to opine about the significance of those differences. The car was broken in per the manual and not tracked or run at higher rpms often or for long. The analysts comments were favorable. I guess perhaps because he knew it was only the second oil change and because the aluminum was lower. I haven't given serious consideration to changing oil and will likely still with the 5000 mile interval.