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Zinc in oil sample

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Joined
Jan 27, 2019
Messages
78
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Just had my oil analysis report. Shows an increase in zinc to 19 ppm up from 6ppm. All other results well within limits.
I’m told that some oil additives such as camguard contains zinc. I did add camguard during the previous 6 months. My engine is the 032- D3G lycoming with 700 hrs approx.
Any ideas greatly appreciated
Dave
 

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