Sodium in Oil Analysis

[pcorman]

i have an IO-550. In my last 2 Blackstone Lab reports, I had Sodium levels. Blackstone said not to worry since it was trending down, but my question is “what is the culprit for Sodium in my Phillips XC 20-50?

Thanks in advance

 

[Timbeck2]

A little light reading. http://www.techenomics.net/tech-blog/2014/02/sodium-in-oil/

 

[denverpilot]

Is the IO-550 one of the engines where they used sodium filled valve stems for cooling?

 

[Gary Austin]

What did Blackstone say about it

 

[pcorman]

Keep an eye on it... which I can only do if I know possible causes