I posted a while asking for oil analysis lab suggestions. I sent samples from my first oil change on this plane to AvLab and Blackstone. I also sent the oil filter to AvLab. There was approximately 25 hours on the oil and filter. They sent results that were dramatically different. The samples were collected almost simultaneously. I drained a quart or so, collected both samples and then drained the rest without pausing during the draining process. I don't recall which was collected first (dang it). In parts per million the results are as follows with the AvLab result first -
iron 31.6 - 123
aluminum 4.4 - 20
lead 1143 - 2611
silicon 12.5 - 4
chromium 0.4 - 2
copper 5.9 - 7
I know the real interest is in establishing a trend, but I'm also surprised at the significant differences. One indicates fairly normal (or "expected" or "average") results and the other indicates (sort of) potential trouble to watch for.
BTW, the oil filter sample indicated trace amount of aluminum flakes 1059x711 microns to 27x18 microns. "This alloy is commonly used in piston pin caps and plugs" was the comment. No other notations from the filter....
Curious about feedback from you all.
Regards
iron 31.6 - 123
aluminum 4.4 - 20
lead 1143 - 2611
silicon 12.5 - 4
chromium 0.4 - 2
copper 5.9 - 7
I know the real interest is in establishing a trend, but I'm also surprised at the significant differences. One indicates fairly normal (or "expected" or "average") results and the other indicates (sort of) potential trouble to watch for.
BTW, the oil filter sample indicated trace amount of aluminum flakes 1059x711 microns to 27x18 microns. "This alloy is commonly used in piston pin caps and plugs" was the comment. No other notations from the filter....
Curious about feedback from you all.
Regards