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[omega3000]

So if internal state is unknown we can use it but best to drop the sump and clean the sump and strainer 

Indeed, although I saw a Ford engine where it seized during teh 20 mins of running with the flush in 

No need to do regularly if your keeping on top of oil changes and I never use it

Yes i know someone who thought it would be a good idea to drain all his oil and run it trying to get every last drop out  needles to say his mundeo needed a new engine 
I would sooner do regular oil and filter changes than use the flush stuff 

[Strangechap]

I used that on my old Granny V6.

New big ends later, it was running fine again. 

Will never touch it again, on any engine.

[05omegav6]

Those cologne lumps were designed for 6k oil changes. Skip them at your peril

[omega3000]

I used that on my old Granny V6.

New big ends later, it was running fine again. 

Will never touch it again, on any engine.

Oh dear 

[Big_Al]

If you even begin to think that a flush is going to help cam cover gasket longevity then think again.

What will help is appropriate oil changes to stop crudd build up and breather issues.

A flush only removes deposits from the parts of the engine it comes into contact with, this excludes breathers which become clogged thanks to the gases passing through them.

The major risk of a flush is related to the state of the engine when you do it, if the inetrnal state is unknow with lots of deposits then you risk the deposits clogging the oil strainer (this has been seen quite a few times!).

I always do very frequent oil & filter changes as well as regular breather cleans     essential in my book 

The reason for the "Wynns flush" question was I am looking at the "clogged spool valve drilling  " theory   where the oil pressure increases

considerably

This theory was explained to me recently & seems logical  so I am just doing some research into oof members thoughts on the use of this

flushing oil

[Abiton]

Cam cover gaskets aren't subjected to pressurised oil though?

[Big_Al]

Yes I understand that but read this link . 




http://www.omegaowners.com/forum/index.php?topic=85252.msg1107225#msg1107225


Now . . my engineering knowledge is very limited but  . . .I think we are talking increased crankcase pressure owing to oil at high pressure

being dumped back in there owing to the spool valve not being able to work properly .

[Abiton]

Nah, sorry.  Crankcase pressure will be influenced by how much blow-by there is, and how well this is vented to the intake via the breather system. 
What happens in the high-pressure oil system is unrelated.  Sure, too much pressure may not be good news for various bearings and bits that are receiving oil at full pumped pressure, but that doesn't include camcovers.