So I rebuilt the motor 14k miles ago and did the oil change I believe 3 times now and never found anything in it. But yesterday I did the third oil change and found what appers to be a needle bearing on the drain plug. so I spent all night and part of this am looking at the lifters and rocker arms and didn't see anything out of place everything looks to be fine and intact what could it be from? We cut the oil filter apart and nothing was in it and we used a magnet to try and retrieve anything in the pan but didn't find anything we even didn't see anything on our little bore camera... Im not sure what else to look for. Also in pic for size comparison that's a 1 gallon water jug cap and a master lock key so its really small....
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