On my 2006 Hemi, I dropped the oil pan bolt in my oil drain pan as I was removing it...Put the bolt back on after draining and filled the engine. After draining the oil from my catch pan into gallon jug, I found a washer in the bottom of the drain pan. I don't know if it was from my son's oil change or from the Hemi bolt. It was a metal washer....thanks guys, RKL