The Cessna 120-140 Association Forum

Has anyone tried Mike Busch oil ring flush?

Yes and it worked for us.
Our #4 cylinder was showing signs of oil in it so we did the procedure and it has not been a problem since.

Rick

cons wrote: ↑Tue Aug 08, 2023 9:43 pm Has anyone tried Mike Busch oil ring flush?

I’m not familiar with this. Is there a link you can share?

Here ya go for a link...

https://resources.savvyaviation.com/wp- ... -flush.pdf

Thanks!

Bumping this up again. Anyone else try it?

Rick, I am assuming you were seeing increased oil burn?

I'm burning a quart in about 4 hr. I was considering trying this flush at annual. No performance issues and normal compressions. I do not see evidence of oil fouling in the plugs but the solvent flush seems like low hanging fruit.

I don’t recall an increase in oil use. It was a few years ago. What I found during the annual inspection was oil in the cylinder when I borescoped it.
You should have it borescoped to see if you have oil in any of the cylinders first. You may only need to do one cylinder. It will save you time and effort. Good luck.

Good point. No oil in my cylinders, so I might be barking up the wrong tree here. Although I presume it's possible to be burning it all as it passes the rings?