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Oil control rings and lessons learned - with pics!

canamex

By canamex
in Vintage Mooneys (pre-J models)

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Mooney-Shiner Rising Star

Mooney-Shiner

Posted
Posted
9 hours ago, EricJ said:

I've not heard of using Mobil 1 for that, but it is not unusual, especially for certain engine types, to put some Marvel Mystery Oil (MMO) in the oil for the same purpose.   

 

Mike Busch has a procedure of ring flush of using mix of 1 gallon Varsol (mineral spirits),  1 gallon Xylene (dimethylbenzene),  2 quarts Aeroshell W100. Its a hydro locking procedure, but you are hydrolocking it by moving the prop by hand. DO NOT run your engine with ring flush mix.   

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canamex
canamex

Hey Mooneyspacers, Just received a picture of my #4 piston and thought I'd share the backstory. In the last 18 months of owning my 1967 M20F, I've flown just under 400 hours and the en

Shadrach
Shadrach

You may be referring to me as I had to split my case at 8XX hours due to a crack. A mechanic can take all the latitude they wish with regards to what they’re willing to do and what they’re  not willin

EricJ
EricJ

The gap appears to be way too wide for where it is sitting, and there's a piece that's broken off in the groove still. 

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Tom 4536 Collaborator

Tom 4536

Posted
Posted
On 11/1/2022 at 3:41 AM, tmo said:

I've read, on the internet, so take that into account, about people adding a pint of automotive Mobil 1 0W20 for a few hours / last flight before an oil change. It supposedly helps clean things up. What do the smart people here think, apart from it being obviously an unapproved approach. But I guess so is Camguard in turbocharged engines.

Is Camguard unapproved for use in turbocharged engines??

kortopates Grand Master

kortopates

Posted
Posted
25 minutes ago, smwash02 said:

It's complicated.

Interestingly Continental used it, and actually required it, in an optional improved warranty program for 1 or 2 years with new engines in order to collect some good data. But nothing has ever been published or publicly released to date that I know of. 

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tmo Veteran

tmo

Posted
Posted

Practical evidence from a sample of one TSIO-360 says it does not hurt. ;) (I was trying to be funny in the previous post, sorry about that)

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