I flew back to visit my mother in Massachusetts last week, which put about 15 hours on the tachometer (I don't have a Hobbs meter) and put my oil change slightly over schedule at 55 hours.
So over the weekend I changed the oil and filter and tested out the new oil filter cutter I bought at Oshkosh.
It's a horribly messy process but eventually I cut the paper out of the filter to examine.
Here's what I saw. See those two flecks? There are about four of them total. I'm not convinced they didn't come off my workbench when I rolled out the paper on a paper towel and stared separating each fold to inspect with a magnifying glass and magnet.
The magnet didn't pick anything up.
I also pulled out the new compression tester and found the #3 cylinder at 71/80, which is pretty pathetic seeing as how it was 79/80 six months ago at the annual condition inspection.
However, it's possibly I'm doing this wrong. My friend, Brad,is going to bring is equipment over some evening this week and we'll try it again.
I can't say the engine has been running rough but I've never been convinced the #3 is entirely healthy, so we'll see. I did notice that as I dialed up the air regulator on the compression tester, the right gauge wasn't moving until the pressure at the regulator went to about 30 and then it snapped up. I wonder if that might be indicative of a stuck exhaust valve and the pressure popped it closed?