Copper in oil analysis ?
Peter wrote:
I've just had a big increase in copper; wonder where copper comes
from. The engine is an IO-540-C4D5D, 500 hrs since new in 2002.
I had the same thing happen. Copper comes from brass bushings. In my
case the wrist pin broke in the middle and the bushing was being
destroyed. I am not sure if there is any other brass in the engine.
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