Michael wrote:

Yes it would. The very fact that the manufacturers COULD do it if
they chose, and choose not to, indicates that they don't want the
facts known.

What makes you think the manufacturers could do that? Many, if not most engine
repairs and overhauls are not performed by the manufacturer, so they have no little
data. You're expecting a manufacturer to spend hundreds of thousands of dollars to
research a report which provides no benefit to the manufacturer. The fact that they
"choose not to" merely indicates that they don't want to waste their money.

George Patterson
In Idaho, tossing a rattlesnake into a crowded room is felony assault.
In Tennessee, it's evangelism.