Dear Pantload (yes, replying your post of 2007 if I see it well)..
Can you recommend a "good starting point" educational video (on youtube or elsewhere) about oil analysis, that a non-engine-overhauler pilot can also understand ? In general, what can we learn about oil analysis ? How is it done, and - importantly - how can I determine, whether the person or workshop who (claims) is doing it well, really does a professional job ?
Thank you,