I change my own engine oil every 3,000 miles. During the past year with three oil changes completed, I have observed aluminum pieces in the bottom of the oil change black pan. Because my wife’s 2017 Acura TLX was the subject of the crankshaft and connecting rod campaign (the dealer had to replace the crankshaft and all of the connecting rod and main bearings) I am familiar with the issue of non-concentric crankshaft connecting rod journals, and so have been surprised that my 2014 MDX with the same 3.5 L V6 has not yet been included. I am pretty sure it ds suffer from the same defect as evidenced by the aluminum in the engine oil. If it fails at hihway speeds, that would possibly cause a safety incident.