Brian,


I did tell some people that the rich break-in they gave their new tapered-bore engine, may have caused it damage.
I may even have said a couple of time that it did cause damage...

Please read Fuelman' post #48, which may be representative, or not.

He got lesser performance from the engine broken-in slobberingly rich.
I believe you would agree that this is damage, even though nothing is actually broken.


Will every tapered-bore engine be damaged by preferring this type of very rich, cold break-in, to my thread?
Definitely not!

But is following my thread safer than the cold way? Unlikely to cause any damage at all?

Sure it is.


I am not getting paid by anyone that selects to follow that thread.
I may even be scorned by engine manufacturers, wanting to make more money on spares.... that will lose money if more of their customers follow this thread, as Fuelman wrote in post #37.


So with tapered-bore engines, it is my way, or the highway... Even if FBD does not agree...