Denny wrote:
How unfavorable was the single analysis, hmmm?
denny
Maule Driver wrote:

Interesting point. I had my case split and cam replaced based on 1
unfavorable analysis.


What do you think?

I had a string of 14 previous samples on my Lycoming 360 from 35hrs TT
to 1146hrs.

I would get an iron reading of '25.0' for about 35 hours of operation
throughout this period of 7 years.

On the 15 sample I got an iron reading of '101.0' for 36 hours of
operation since last analysis.

A subsequent filter analysis did show some very fine iron filings. The
filings felt like fine silt to the touch. No chunks or sand size particles.

Asked around for input (including here). In the end, it was clear
'something' had begun to happen. Everything else checkable, checked out
ok. I planned to keep flying this aircraft for at least 3 more years.

I had it split. There were indications that 2 lobs on the cam had just
begun to spall.