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This is my first oil analysis using Phillips X/C 20W-50 oil. I was using Aeroshell before, but it was causing my copper levels to be high - most likely from an additive in the oil. I don't know if the copper was good or bad for the engine, but a lot of people at the airport recommended the Phillips oil. Needless to say, I'm thrilled with this most recent report. Nearly all levels are significantly down.   
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Last Modified: August 13, 2023 |