One hundred miles East of here is an Amish community that has a hardware store called "Yoders". Bon-ami is $1.29. Back home today, I did the deed. I put a known abrasive down the intake of a running engine. Results as follows:
Compression, Before After
1 117 110
2 95 112
3 85 95
4 105 112
5 107 100
6 97 115
Note that two cylinders actually lost compression.
I mixed a good-sized tablespoon of Bon-ami with about 8 ounces of gasoline.
With the rpms about 1800-2000, I dribbled in the solution with a turkey baster. Have to go slowly, don't want to kill it.
Almost immediately, it began burning oil at a very high rate, much worse than it was before. I finished the mixture, put the air cleaner on and decided to take a trip around the block.
I could see blue clouds following me, but it wasn't as bad as I expected when I first started.
Back in the garage, at idle, there was very little smoke.
I put my hand at the tailpipe and could feel a sticking valve momentarily sucking my hand. Then I realized,,,,,,,,no smoke, and the sucking stopped. It must have warmed up? or,,,,
It fixed itself in 5 minutes?
I have no intentions of changing the oil, since I never really have. I use the oil I drain from my Buick every 3000 miles. Hey, its got filter on it.
I'll just keep going and post anything unusual that I see, but I don't expect any problems or miracles.