Engine Oil Analysis help, please

Mike

You didn't give much data for anyone to make valid comments on.

1. Type and age of engine.(Including hours)
2. Type flying it has been doing (acrobatics, XC , training in
pattern, etc.)
3. Cylinder compression.
4. Type oil and how often it has been changed.
5. How often flown and whether hangered or tied down and part of
country you are in. .Any other things you can think of.

Oil analysis is basically a trend monitoring system. After
establishing a trend and you then come to a knee, you know to do
something about it before you have a major failure

I read the report recommendation "to sample next oil change to check
wear trend" as that they didn't find any incipient failure and to
check next oil change for any change in the analysis trend.

Anyone else want to add to these comments?

The Air Force started oil analysis many years ago and used to pull an
engine when the analysis showed excessive wear inside.


Big John


On Sat, 25 Oct 2003 15:45:54 -0400, Michael Horowitz
wrote:

I did my first oil change, had an oil analysis done and got back the
results. Two figures were flagged: 20ppm for AL and 99ppm for Iron
with the following comments: Wear Metals Appear Slightly High for Oil
Time, and Possible Corrosion if Aircraft Not Flown Regularly. It
concluded with the recommendation to sample next oil change to check
wear trend.

Is it time to panic or just note the figures with interest? - Mike

The Air Force started oil analysis many years ago and used to pull an
engine when the analysis showed excessive wear inside.
Naval Aviation does the same.

Watch the trend.


Larry
AECS (AW/SW/MTS)
Disabled Combat Veteran
USN Retired

20 years of Navy in my rear view mirror
and getting further away every day ;-)


"Big John" wrote in message
...
Mike

You didn't give much data for anyone to make valid comments on.

1. Type and age of engine.(Including hours)
2. Type flying it has been doing (acrobatics, XC , training in
pattern, etc.)
3. Cylinder compression.
4. Type oil and how often it has been changed.
5. How often flown and whether hangered or tied down and part of
country you are in. .Any other things you can think of.

Oil analysis is basically a trend monitoring system. After
establishing a trend and you then come to a knee, you know to do
something about it before you have a major failure

I read the report recommendation "to sample next oil change to check
wear trend" as that they didn't find any incipient failure and to
check next oil change for any change in the analysis trend.

Anyone else want to add to these comments?

The Air Force started oil analysis many years ago and used to pull an
engine when the analysis showed excessive wear inside.


Big John


On Sat, 25 Oct 2003 15:45:54 -0400, Michael Horowitz
wrote:

I did my first oil change, had an oil analysis done and got back the
results. Two figures were flagged: 20ppm for AL and 99ppm for Iron
with the following comments: Wear Metals Appear Slightly High for Oil
Time, and Possible Corrosion if Aircraft Not Flown Regularly. It
concluded with the recommendation to sample next oil change to check
wear trend.

Is it time to panic or just note the figures with interest? - Mike