"Gary Wilcox" wrote in message .. .

What is the likely source of this aluminum? The mechanic suggested that I
fly for 10 hours and change the oil again to see if the problem goes away.


Though I've never personally had that problem, I know a few that
have. In every case, the source of aluminum was the piston pin plugs.

John Galban=====N4BQ (PA28-180)