No probs, I would add though that if oil analysis is done from the 1st oil change an engine has it would pick up problems (but who does!?), or from the time the big end bearings are changed it would then pick up if they had problems at a later stage, if it's done at every oil change. In addition to that I would suggest a max lead level of 10ppm (assuming lead/copper bearings, & yes that's low! And lower than the labs suggest) & possibly sampling it about every 3k miles or so!
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