Guess the first question I have is what color was the exhaust oil before the crash? My experience with engines is that an almost new color of castor oil comes out of the mufflers when
fully broken in. My Magnum .40 continued to spray out black exhaust on 20% castor oil fuel for
a long time after the break in run was done. After landing flights later on, I found almost a clear
color of oil splattered on the trainer. Some engines take longer to wear in. Now the Evolution
.46 engine just recently acquired in a model purchase, only took the Dave Gierke ABC break in
run to have the oil color change to clear yellow. When you finished your cleaning after the crash, was there any wear noted on the back plate, or a lot of crankshaft end play? As has been
suggested on this thread, there could be something creating metal flakes. I would certainly
inspect the engine parts again before continuing to fly it. I am not familiar with Omega fuel oil
content, but hope there is some castor oil in it for protection from a lean run.

I lost my first .47 in a flyaway, and purchased three more to feel better. I am sure this thread
will answer your question.