Just did an oil analysis - first oil change on the "new" plane. The O-320-E3D (Warrior I) isn't upgraded to the 160HP, was overhauled about 350 hours ago. Blackstone said aluminum is at 15 (average is 6) and chromium at 54 (average is 7). They say it's from piston and ring wear. Compressions are good, no metal in the filter. Is this "early life" wear on the pistons or might there be something wrong?
EDIT: 42 hours on the oil for those numbers. Philips XC 20W-50.
EDIT: 42 hours on the oil for those numbers. Philips XC 20W-50.
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