Additive for high oil consumption with bad rings

[wag123]

Turbocharged engines are a whole different animal when it comes to the mechanical stresses involved inside an engine. Many of the internal engine problems commonly seen on turbocharged engines are things that you will almost never see on normally aspirated engines. Broken rings are one of those things. Broken pistons are another.
The loss of mechanical (static) compression in a damaged turbocharged engine is compensated-for by increased boost which is capable of maintaining the total (actual) compression to a high enough level where the engine will not miss, this is why it is not throwing a CEL.

 

[Trav]

Yep but all this i seen this and i seen that lots of times isn't doing anyone any good.
I can go on all day about a particular inline engine having a common problem with scored number 5 and 6 cyl and not throw a code even with no turbo but its pointless and useless info as far as the OP is concerned.

You presented a valid condition, but you seem fixated on it being the absolute cause and who ever diagnosed it otherwise is full of manure, it may or may not be. This is an internet forum, no one can see the engine to diagnose it even the OP hasn't seen it so there are no absolutes.

Like i said the condition has been diagnosed and awaiting verification.

I'm done.

 

[Michael_P]

3 quarts in 750 miles? That thing has to be smoking like a chimney. Those VG engines are rock solid even after 200K. Where in OH is he?

 

[Quest]

Originally Posted By: Trav
but you seem fixated on it being the absolute cause and who ever diagnosed it otherwise is full of manure, it may or may not be. This is an internet forum, no one can see the engine to diagnose it even the OP hasn't seen it so there are no absolutes.

Like i said the condition has been diagnosed and awaiting verification.






I'm with Trav on this one.

Enuf said.

Q.

 

[demarpaint]

Originally Posted By: Quest
Originally Posted By: Trav
but you seem fixated on it being the absolute cause and who ever diagnosed it otherwise is full of manure, it may or may not be. This is an internet forum, no one can see the engine to diagnose it even the OP hasn't seen it so there are no absolutes.

Like i said the condition has been diagnosed and awaiting verification.



I'm with Trav on this one.

Enuf said.

Q.



Add me to that list.

 

[SteveSRT8]

In the high performance V8 world I have had the opportunity to see MANY with broken rings, one with all the top rings in a dozen pieces or more! And it actually ran pretty good!

Broken pistons happened more than you think.

But diagnosis required the removal of the cylinder head at the least. We could never 'type in' a fix!

 

[wag123]

Originally Posted By: SteveSRT8
In the high performance V8 world I have had the opportunity to see MANY with broken rings, one with all the top rings in a dozen pieces or more! And it actually ran pretty good!

Broken pistons happened more than you think.

But diagnosis required the removal of the cylinder head at the least. We could never 'type in' a fix!


Agreed. I used to drag race. I've seen it too. But, these are engines that are being run on the very edge of their mechanical envelope using parts that push the engine well past it's original design limits. Turbocharged street engines also tend to fall into this high-stress category but to a lesser extent.
This is a roughly 200hp under-stressed street engine we are talking about here, and an engine with an outstanding long term reliability record. I have owned two Nissans with that engine in it and put on over 400k combined miles between the two of them without any internal/mechanical engine problems whatsoever. The only things that I had to do (besides normal maintenance) to either of them was the replacement of broken exhaust manifold bolts, motor mounts, and poor quality rubber hoses (emission & fuel). Anyone who has owned one of these for an extended time period has likely had to deal with these problems because they are known issues, broken rings are not.
I am NOT saying that it beyond the realm of possibility that the engine might have broken rings, but I choose to be optimistic and offer some degree of hope to the poor guy that his problem is a much easier and less expensive fix than he has been led to believe, and from personal experience IMO the odds are in his favor. I sincerely hope that I am right and that I have been able to help him.