Savvy ring flush procedure. Question

[Mcstealth]

I am sure it has been discussed here before,  just not finding it on the search function. 

It seems fairly straight forward, nothing too intricate. 

Are there naysayers to the flush procedure? Any reason not to do it?

savvy-oil-control-ring-solvent-flush.pdf

Edited December 31, 2022 by Mcstealth

[A64Pilot]

I am the Naysayer, many of course are not.

My reason’s are only a few, first it’s not a procedure recognized by the manufacturers, you won’t find it in any manual, at least that I’m aware of.

But at least as important is you’re treating the symptoms not fixing anything. Carboned or gummed up rings is not a normal operating condition for a cylinder, in order to get that way there is something that caused it, by just flushing them out you haven’t fixed the cause, you haven’t even investigated what the cause may even be, so if nothing was done to eliminate the cause, how long until the symptom returns?

Will you be IMC climbing over mountains or over water when it reappears?

Many things require periodic cleaning, spark plugs, stater bendix etc. but cylinder rings isn’t one of them.

Before I did this I’d call whoever manufactured my engine and ask, and if they said go ahead I’d ask for a letter to put in the records where I recorded the ring flush. You do plan on putting this maintenance in the book don’t you? Then I’d do it.

[N201MKTurbo]

I was always a bit suspicious of the procedure. I was helping with this old 310 a while back and one cylinder had very low compression. You could hear it was the rings. So I told the owner to do the ring flush. We left the solvent in overnight, then slowly pushed it past the rings. That cylinder made 75 Lbs after that, so the procedure isn't worthless. I wouldn't do it unless you had a problem though.

[EricJ]

+1 that it works, but you need to change the oil after doing it.  Definitely something to try before pulling a cylinder if the rings are suspect.

[kortopates]

It doesn’t always work, but I’ve lost count of the number of very happy clients that this non-invasive procedure saved them from pulling a cylinder!

Pull the sump drain so it isn’t exposed to the solvent since it’s harmful to o-rings.


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[N201MKTurbo]

Everybody does understand that this procedure is just for old neglected engines, when you just want to get a few hundred more hours out of it, right!

[Mcstealth]

Thanks guys.