Oil Analysis Question

[UnPossible]

Hey - I'm still new at the whole airplane ownership game and have a question on oil analysis.

I have an Aero Sport Power IO-375 on my newly flying 7A. In April or so, I drained the perservative oil and filled it with Aeroshell 100 mineral oil.

I ran this oil for the first 10 hours then changed the oil. I did not send that oil in for analysis (I figured that it would be high in metal content due to breaking in a new engine)

For the next 15 hours, I also used Aeroshell 100 mineral oil, but went ahead and sent in a sample to see how thing were going.

As you can read in the numbers and the summary below, the folks at Blackstone labs were a bit suprised at the very low metal content in the oil given the very low hours on the engine.

I am assuming that this is good news and that the engine was pretty much broken in during the first 10 hours.... am I interperting this correctly or is there any other reason why the metal content would be so low after only 25 total hours (15 on this oil)?

Thanks,
Jason

[RV10inOz]

Might also depend when and how you collected the sample.

Trends are what you are interested in, over time you will see.